diff --git a/lib/jkqtplotter/graphs/jkqtpimage.cpp b/lib/jkqtplotter/graphs/jkqtpimage.cpp
index ad428389ae..490a7287c1 100644
--- a/lib/jkqtplotter/graphs/jkqtpimage.cpp
+++ b/lib/jkqtplotter/graphs/jkqtpimage.cpp
@@ -777,8 +777,8 @@ void JKQTPMathImage::setParent(JKQTBasePlotter* parent) {
     if (parent) {
         parent->registerAdditionalAction(tr("Save Image Plot Images ..."), actSaveImage);
         parent->registerAdditionalAction(tr("Copy Image Plot Images ..."), actCopyImage);
-        parent->registerAdditionalAction(tr("Save Image Plot Images ..."), actSavePalette);
-        parent->registerAdditionalAction(tr("Copy Image Plot Images ..."), actCopyPalette);
+        parent->registerAdditionalAction(tr("Save Image Plot Palettes ..."), actSavePalette);
+        parent->registerAdditionalAction(tr("Copy Image Plot Palettes ..."), actCopyPalette);
     }
     actSaveImage->setEnabled(parent);
     actCopyImage->setEnabled(parent);
@@ -860,7 +860,7 @@ void JKQTPMathImage::saveColorbarPlotAsImage(const QString &filename, const QByt
         QString selFormat;
         if (fn.isEmpty()) {
             selFormat=currentFileFormat;
-            fn = QFileDialog::getSaveFileName(nullptr, tr("Save Image Plot As Image ..."),
+            fn = QFileDialog::getSaveFileName(nullptr, tr("Save Palette Plot As Image ..."),
                                         currentSaveDirectory,
                                               filt.join(";;"), &selFormat);
             if (!fn.isEmpty()) currentSaveDirectory=QFileInfo(fn).absolutePath();
@@ -905,12 +905,12 @@ void JKQTPMathImage::draw(JKQTPEnhancedPainter& painter) {
 
 
 void JKQTPMathImage::getOutsideSize(JKQTPEnhancedPainter& painter, int& leftSpace, int& rightSpace, int& topSpace, int& bottomSpace) {
-    JKQTPGraph::getOutsideSize(painter, leftSpace, rightSpace, topSpace, bottomSpace);
+    JKQTPMathImageBase::getOutsideSize(painter, leftSpace, rightSpace, topSpace, bottomSpace);
     cbGetOutsideSize(painter, leftSpace, rightSpace, topSpace, bottomSpace);
 }
 
 void JKQTPMathImage::drawOutside(JKQTPEnhancedPainter& painter, QRect leftSpace, QRect rightSpace, QRect topSpace, QRect bottomSpace) {
-    JKQTPGraph::drawOutside(painter, leftSpace, rightSpace, topSpace, bottomSpace);
+    JKQTPMathImageBase::drawOutside(painter, leftSpace, rightSpace, topSpace, bottomSpace);
     if (showColorBar) cbDrawOutside(painter, leftSpace, rightSpace, topSpace, bottomSpace);
 }
 
diff --git a/lib/jkqtplotter/graphs/jkqtpimagergb.cpp b/lib/jkqtplotter/graphs/jkqtpimagergb.cpp
index ca1ccf47b9..86b8ae8f8b 100644
--- a/lib/jkqtplotter/graphs/jkqtpimagergb.cpp
+++ b/lib/jkqtplotter/graphs/jkqtpimagergb.cpp
@@ -42,61 +42,19 @@ void JKQTPRGBMathImage::initObject()
 
     rgbMode=JKQTPRGBMathImageModeRGBMode;
     colorBarRightAxis=new JKQTPVerticalIndependentAxis(0, 100, 0, 100, parent);
-    colorBarRightAxis->setDrawMode1(JKQTPCADMLine);
-    colorBarRightAxis->setDrawMode2(JKQTPCADMcomplete);
     colorBarRightAxis->setAxisLabel("");
-    colorBarRightAxis->setMinTicks(5);
-    colorBarRightAxis->setMinorTicks(0);
-    colorBarRightAxis->setTickOutsideLength(0);
-    colorBarRightAxis->setMinorTickOutsideLength(0);
-    colorBarRightAxis->setShowZeroAxis(false);
     colorBarTopAxis=new JKQTPHorizontalIndependentAxis(0, 100, 0, 100, parent);
-    colorBarTopAxis->setDrawMode1(JKQTPCADMLine);
-    colorBarTopAxis->setDrawMode2(JKQTPCADMcomplete);
     colorBarTopAxis->setAxisLabel("");
-    colorBarTopAxis->setMinTicks(3);
-    colorBarTopAxis->setMinorTicks(0);
-    colorBarTopAxis->setTickOutsideLength(0);
-    colorBarTopAxis->setMinorTickOutsideLength(0);
-    colorBarTopAxis->setShowZeroAxis(false);
 
     colorBarRightAxisG=new JKQTPVerticalIndependentAxis(0, 100, 0, 100, parent);
-    colorBarRightAxisG->setDrawMode1(JKQTPCADMLine);
-    colorBarRightAxisG->setDrawMode2(JKQTPCADMcomplete);
     colorBarRightAxisG->setAxisLabel("");
-    colorBarRightAxisG->setMinTicks(5);
-    colorBarRightAxisG->setShowZeroAxis(false);
-    colorBarRightAxisG->setMinorTicks(0);
-    colorBarRightAxisG->setTickOutsideLength(0);
-    colorBarRightAxisG->setMinorTickOutsideLength(0);
     colorBarTopAxisG=new JKQTPHorizontalIndependentAxis(0, 100, 0, 100, parent);
-    colorBarTopAxisG->setDrawMode1(JKQTPCADMLine);
-    colorBarTopAxisG->setDrawMode2(JKQTPCADMcomplete);
     colorBarTopAxisG->setAxisLabel("");
-    colorBarTopAxisG->setMinTicks(3);
-    colorBarTopAxisG->setShowZeroAxis(false);
-    colorBarTopAxisG->setMinorTicks(0);
-    colorBarTopAxisG->setTickOutsideLength(0);
-    colorBarTopAxisG->setMinorTickOutsideLength(0);
 
     colorBarRightAxisB=new JKQTPVerticalIndependentAxis(0, 100, 0, 100, parent);
-    colorBarRightAxisB->setDrawMode1(JKQTPCADMLine);
-    colorBarRightAxisB->setDrawMode2(JKQTPCADMcomplete);
     colorBarRightAxisB->setAxisLabel("");
-    colorBarRightAxisB->setMinTicks(5);
-    colorBarRightAxisB->setShowZeroAxis(false);
-    colorBarRightAxisB->setMinorTicks(0);
-    colorBarRightAxisB->setTickOutsideLength(0);
-    colorBarRightAxisB->setMinorTickOutsideLength(0);
     colorBarTopAxisB=new JKQTPHorizontalIndependentAxis(0, 100, 0, 100, parent);
-    colorBarTopAxisB->setDrawMode1(JKQTPCADMLine);
-    colorBarTopAxisB->setDrawMode2(JKQTPCADMcomplete);
     colorBarTopAxisB->setAxisLabel("");
-    colorBarTopAxisB->setMinTicks(3);
-    colorBarTopAxisB->setShowZeroAxis(false);
-    colorBarTopAxisB->setMinorTicks(0);
-    colorBarTopAxisB->setTickOutsideLength(0);
-    colorBarTopAxisB->setMinorTickOutsideLength(0);
 
 
     this->colorBarTopVisible=true;
diff --git a/lib/jkqtplotter/jkqtpbaseplotterstyle.h b/lib/jkqtplotter/jkqtpbaseplotterstyle.h
index 8eab90e945..9aa463888d 100644
--- a/lib/jkqtplotter/jkqtpbaseplotterstyle.h
+++ b/lib/jkqtplotter/jkqtpbaseplotterstyle.h
@@ -148,9 +148,9 @@ class JKQTPLOTTER_LIB_EXPORT JKQTBasePlotterStyle {
         /** \brief style of the y-axis of the main coordinate system */
         JKQTPCoordinateAxisStyle yAxisStyle;
         /** \brief style of the coordinate axes used to display colorbars in the right */
-        JKQTPCoordinateAxisStyle rightColorbarAxisStyle;
+        JKQTPColorbarCoordinateAxisStyle rightColorbarAxisStyle;
         /** \brief style of the coordinate axes used to display colorbars at the top */
-        JKQTPCoordinateAxisStyle topColorbarAxisStyle;
+        JKQTPColorbarCoordinateAxisStyle topColorbarAxisStyle;
         /** \brief style of the graphs */
         JKQTGraphsBaseStyle graphsStyle;
 
diff --git a/lib/jkqtplotter/jkqtpcoordinateaxes.cpp b/lib/jkqtplotter/jkqtpcoordinateaxes.cpp
index f2fd5985f2..c18d0eeeb3 100644
--- a/lib/jkqtplotter/jkqtpcoordinateaxes.cpp
+++ b/lib/jkqtplotter/jkqtpcoordinateaxes.cpp
@@ -1327,6 +1327,12 @@ void JKQTPVerticalAxis::drawAxes(JKQTPEnhancedPainter& painter) {
     //qDebug()<<"    offset="<<offset;
     //qDebug()<<"    x2p(0)="<<x2p(0);
     //qDebug()<<"    tickStart="<<tickStart;
+    //qDebug()<<"    drawMode1="<<JKQTPCADrawMode2String(axisStyle.drawMode1);
+    //qDebug()<<"    drawMode2="<<JKQTPCADrawMode2String(axisStyle.drawMode2);
+    //qDebug()<<"    tickInsideLength="<<axisStyle.tickInsideLength;
+    //qDebug()<<"    tickOutsideLength="<<axisStyle.tickOutsideLength;
+    //qDebug()<<"    minorTickInsideLength="<<axisStyle.minorTickInsideLength;
+    //qDebug()<<"    minorTickOutsideLength="<<axisStyle.minorTickOutsideLength;
 
     if (std::isnan(left) || std::isnan(right) || std::isnan(top) || std::isnan(bottom)) return;
     if (std::isinf(left) || std::isinf(right) || std::isinf(top) || std::isinf(bottom)) return;
@@ -1397,13 +1403,14 @@ void JKQTPVerticalAxis::drawAxes(JKQTPEnhancedPainter& painter) {
 
             double xleft=-1000000;
             double xx=x2p(x);
-            //qDebug()<<"   tick @ x="<<x<<"   label="<<label<<"   mtdist="<<mtdist<<"   axisStyle.minorTicks="<<minorTicks;
+            //qDebug()<<"   tick @ x="<<x<<"   label="<<label<<"   mtdist="<<mtdist;
 
             if (JKQTPCADrawModeHasTicks(axisStyle.drawMode1)||JKQTPCADrawModeHasTickLabels(axisStyle.drawMode1)) {
                 //painter.setPen(ptick);
                 if ((x<=axismax) && (x>=axismin))  {
                     QLineF l(left-parent->pt2px(painter, axisStyle.tickOutsideLength), xx, left+parent->pt2px(painter, axisStyle.tickInsideLength), xx);
                     if (l.length()>0) lines_ptick.append(l);//painter.drawLine(l);
+                    //qDebug()<<"tick: "<<l;
                 }
                 //painter.setPen(pmtick);
                 if ((tickLabels.size()<=0) && (axisStyle.minorTicks>0)) {
@@ -1424,6 +1431,7 @@ void JKQTPVerticalAxis::drawAxes(JKQTPEnhancedPainter& painter) {
                         if (mx<=axismax && mx>=axismin) {
                             QLineF l(xleft=left-parent->pt2px(painter, axisStyle.minorTickOutsideLength), mxx, left+parent->pt2px(painter, axisStyle.minorTickInsideLength), mxx);
                             if (l.length()>0) lines_pmtick.append(l);//painter.drawLine(l);
+                            //qDebug()<<"minortick: "<<l;
                             double val= mx/pow(logAxisBase,floor(log(mx)/log(logAxisBase)));
 
                             if (axisStyle.minorTickLabelsEnabled&&JKQTPCADrawModeHasTickLabels(axisStyle.drawMode1)) {
@@ -1443,6 +1451,8 @@ void JKQTPVerticalAxis::drawAxes(JKQTPEnhancedPainter& painter) {
                 if (x<=axismax && x>=axismin) {
                     QLineF l(right-parent->pt2px(painter, axisStyle.tickInsideLength), xx, right+parent->pt2px(painter, axisStyle.tickOutsideLength), xx);
                     if (l.length()>0) lines_ptick2.append(l);//painter.drawLine(l);
+                    //qDebug()<<"tick2: "<<l;
+
                 }
                 //painter.setPen(pmtick);
                 if ((tickLabels.size()<=0) && (axisStyle.minorTicks>0)) {
@@ -1462,6 +1472,8 @@ void JKQTPVerticalAxis::drawAxes(JKQTPEnhancedPainter& painter) {
                         if (mx<=axismax && mx>=axismin)  {
                             QLineF l(right-parent->pt2px(painter, axisStyle.minorTickInsideLength), mxx, xleft=(right+parent->pt2px(painter, axisStyle.minorTickOutsideLength)), mxx);
                             if (l.length()>0) lines_pmtick2.append(l);//painter.drawLine(l);
+                            //qDebug()<<"minortick2: "<<l;
+
                             double val= mx/pow(logAxisBase,floor(log(mx)/log(logAxisBase)));
 
                             if (axisStyle.minorTickLabelsEnabled) {
@@ -1497,6 +1509,13 @@ void JKQTPVerticalAxis::drawAxes(JKQTPEnhancedPainter& painter) {
         painter.setPen(pmtick);
         painter.drawLines(lines_pmtick);
         painter.drawLines(lines_pmtick2);
+        //qDebug()<<"left="<<left<<", right="<<right<<", top="<<top<<", bottom="<<bottom;
+        //qDebug()<<"ptick: "<<jkqtp_QColor2String(ptick.color())<<","<<jkqtp_QPenStyle2String(ptick.style())<<" lines_ptick.size="<<lines_ptick.size()<<", lines_ptick2.size="<<lines_ptick2.size();
+        //if (lines_ptick.size()>0) qDebug()<<"  lines_ptick[0]="<<lines_ptick[0];
+        //if (lines_ptick2.size()>0) qDebug()<<"  lines_ptick2[0]="<<lines_ptick2[0];
+        //qDebug()<<"pmtick: "<<jkqtp_QColor2String(pmtick.color())<<","<<jkqtp_QPenStyle2String(pmtick.style())<<" lines_pmtick.size="<<lines_pmtick.size()<<", lines_pmtick2.size="<<lines_pmtick2.size();
+        //if (lines_pmtick.size()>0) qDebug()<<"  lines_pmtick[0]="<<lines_pmtick[0];
+        //if (lines_pmtick2.size()>0) qDebug()<<"  lines_pmtick2[0]="<<lines_pmtick2[0];
     }
 
     // plot axis label
diff --git a/lib/jkqtplotter/jkqtpcoordinateaxesstyle.cpp b/lib/jkqtplotter/jkqtpcoordinateaxesstyle.cpp
index ce42736ac8..43a60de7bb 100644
--- a/lib/jkqtplotter/jkqtpcoordinateaxesstyle.cpp
+++ b/lib/jkqtplotter/jkqtpcoordinateaxesstyle.cpp
@@ -150,3 +150,26 @@ void JKQTPCoordinateAxisStyle::saveSettings(QSettings &settings, const QString &
     minorGridStyle.saveSettings(settings, group+"minor_grid/");
 }
 
+
+JKQTPColorbarCoordinateAxisStyle::JKQTPColorbarCoordinateAxisStyle():
+    JKQTPCoordinateAxisStyle()
+{
+    initMembersForColorbars();
+}
+
+
+JKQTPColorbarCoordinateAxisStyle::JKQTPColorbarCoordinateAxisStyle(const JKQTBasePlotterStyle &baseStyle):
+    JKQTPCoordinateAxisStyle(baseStyle)
+{
+    initMembersForColorbars();
+}
+
+void JKQTPColorbarCoordinateAxisStyle::initMembersForColorbars() {
+    drawMode1=JKQTPCADMLine;
+    drawMode2=JKQTPCADMcomplete;
+    minTicks=5;
+    minorTicks=0;
+    tickOutsideLength=0;
+    minorTickOutsideLength=0;
+    showZeroAxis=false;
+}
diff --git a/lib/jkqtplotter/jkqtpcoordinateaxesstyle.h b/lib/jkqtplotter/jkqtpcoordinateaxesstyle.h
index c6a4541fd0..c8a12710f7 100644
--- a/lib/jkqtplotter/jkqtpcoordinateaxesstyle.h
+++ b/lib/jkqtplotter/jkqtpcoordinateaxesstyle.h
@@ -185,4 +185,27 @@ class JKQTPLOTTER_LIB_EXPORT JKQTPCoordinateAxisStyle {
         double axisLineOffset;
 };
 
+
+/** \brief Support Class for JKQTPCoordinateAxis, which summarizes all properties that define the visual styling of a JKQTPCoordinateAxis
+ *         used for colorbars outside the plot
+ *  \ingroup jkqtpplotter_styling
+ *
+ * The major difference between this dervied version and the base JKQTPCoordinateAxisStyle are differently initialized members.
+ * \see JKQTPCoordinateAxis, \ref jkqtpplotter_styling
+ *
+ */
+class JKQTPLOTTER_LIB_EXPORT JKQTPColorbarCoordinateAxisStyle: public JKQTPCoordinateAxisStyle {
+        Q_GADGET
+    public:
+        /** \copydoc JKQTPCoordinateAxisStyle::JKQTPCoordinateAxisStyle() */
+        JKQTPColorbarCoordinateAxisStyle();
+
+        /** \copydoc JKQTPCoordinateAxisStyle::JKQTPCoordinateAxisStyle(const JKQTBasePlotterStyle&) */
+        JKQTPColorbarCoordinateAxisStyle(const JKQTBasePlotterStyle& baseStyle);
+    private:
+        /** \brief modifies the members to match the requirements of colorbar axes */
+        void initMembersForColorbars();
+
+};
+
 #endif // JKQTPCOORDINATEAXESSTYLE_H
diff --git a/lib/jkqtplotter/jkqtpimagetools.cpp b/lib/jkqtplotter/jkqtpimagetools.cpp
index 77fa7b3874..9bfc29bcb7 100644
--- a/lib/jkqtplotter/jkqtpimagetools.cpp
+++ b/lib/jkqtplotter/jkqtpimagetools.cpp
@@ -38,23 +38,9 @@ JKQTPColorPaletteStyleAndToolsMixin::JKQTPColorPaletteStyleAndToolsMixin(JKQTBas
 {
     cbParent=parent;
     colorBarRightAxis=new JKQTPVerticalIndependentAxis(0, 100, 0, 100, parent);
-    colorBarRightAxis->setDrawMode1(JKQTPCADMLine);
-    colorBarRightAxis->setDrawMode2(JKQTPCADMcomplete);
     colorBarRightAxis->setAxisLabel("");
-    colorBarRightAxis->setMinTicks(3);
-    colorBarRightAxis->setShowZeroAxis(false);
-    colorBarRightAxis->setMinorTicks(0);
-    colorBarRightAxis->setTickOutsideLength(0);
-    colorBarRightAxis->setMinorTickOutsideLength(0);
     colorBarTopAxis=new JKQTPHorizontalIndependentAxis(0, 100, 0, 100, parent);
-    colorBarTopAxis->setDrawMode1(JKQTPCADMLine);
-    colorBarTopAxis->setDrawMode2(JKQTPCADMcomplete);
     colorBarTopAxis->setAxisLabel("");
-    colorBarTopAxis->setMinTicks(3);
-    colorBarTopAxis->setShowZeroAxis(false);
-    colorBarTopAxis->setMinorTicks(0);
-    colorBarTopAxis->setTickOutsideLength(0);
-    colorBarTopAxis->setMinorTickOutsideLength(0);
 
 
     this->palette=JKQTPMathImageMATLAB;
@@ -147,13 +133,11 @@ void JKQTPColorPaletteStyleAndToolsMixin::cbDrawOutside(JKQTPEnhancedPainter& pa
 
          //qDebug()<<"r: "<<imageName<<rightSpace;
 
-         QRect cb(static_cast<int>(rightSpace.x()+cbParent->pt2px(painter, colorBarOffset)), rightSpace.top()+(rightSpace.height()-barHeight)/2, static_cast<int>(cbParent->pt2px(painter, colorBarWidth)), barHeight);
+         QRectF cb(static_cast<int>(rightSpace.x()+cbParent->pt2px(painter, colorBarOffset)), rightSpace.top()+(rightSpace.height()-barHeight)/2, static_cast<int>(cbParent->pt2px(painter, colorBarWidth)), barHeight);
          painter.drawImage(cb, b.mirrored(true, false));
          QPen p=painter.pen();
          p.setColor(colorBarRightAxis->getAxisColor());
          p.setWidthF(qMax(JKQTPlotterDrawingTools::ABS_MIN_LINEWIDTH, cbParent->pt2px(painter, colorBarRightAxis->getLineWidth()*cbParent->getLineWidthMultiplier())));
-         painter.setPen(p);
-         painter.drawRect(cb);
 
          colorBarRightAxis->setRange(internalDataMin, internalDataMax);
          colorBarRightAxis->setAxisWidth(cb.height());
@@ -162,12 +146,17 @@ void JKQTPColorPaletteStyleAndToolsMixin::cbDrawOutside(JKQTPEnhancedPainter& pa
          colorBarRightAxis->setOtherAxisWidth(cb.width());
          colorBarRightAxis->drawAxes(painter);
 
+         if ( JKQTPCADrawModeHasLine(colorBarRightAxis->getDrawMode1()) && JKQTPCADrawModeHasLine(colorBarRightAxis->getDrawMode2())) {
+             painter.setPen(p);
+             painter.drawLine(QLineF(cb.topLeft(), cb.topRight()));
+             painter.drawLine(QLineF(cb.bottomLeft(), cb.bottomRight()));
+         }
 
 
          cbParent->getMathText()->setFontSize(imageNameFontSize*cbParent->getFontSizeMultiplier());
          cbParent->getMathText()->setFontRomanOrSpecial(imageNameFontName);
          cbParent->getMathText()->parse(imageName);
-         cbParent->getMathText()->draw(painter, Qt::AlignHCenter|Qt::AlignVCenter, QRect(rightSpace.x(), rightSpace.y(), rightSpace.width(), (rightSpace.height()-barHeight)/2));
+         cbParent->getMathText()->draw(painter, Qt::AlignHCenter|Qt::AlignVCenter, QRectF(rightSpace.x(), rightSpace.y(), rightSpace.width(), (rightSpace.height()-barHeight)/2));
 
 
      }
@@ -197,7 +186,7 @@ void JKQTPColorPaletteStyleAndToolsMixin::cbDrawOutside(JKQTPEnhancedPainter& pa
          }
 
 
-         QRect cb(topSpace.x()+(topSpace.width()-barWidth)/2, static_cast<int>(topSpace.bottom()-cbParent->pt2px(painter, colorBarOffset+(colorBarWidth))), barWidth, static_cast<int>(cbParent->pt2px(painter, colorBarWidth)));
+         QRectF cb(topSpace.x()+(topSpace.width()-barWidth)/2, static_cast<int>(topSpace.bottom()-cbParent->pt2px(painter, colorBarOffset+(colorBarWidth))), barWidth, static_cast<int>(cbParent->pt2px(painter, colorBarWidth)));
          //qDebug()<<"t: "<<imageName<<topSpace<<topSpace.bottom()<<colorBarOffset<<"\n     "<<cb;
          QTransform rm;
          rm.rotate(90);
@@ -206,7 +195,7 @@ void JKQTPColorPaletteStyleAndToolsMixin::cbDrawOutside(JKQTPEnhancedPainter& pa
          p.setColor(colorBarTopAxis->getAxisColor());
          p.setWidthF(qMax(JKQTPlotterDrawingTools::ABS_MIN_LINEWIDTH, cbParent->pt2px(painter, colorBarTopAxis->getLineWidth()*cbParent->getLineWidthMultiplier())));
          painter.setPen(p);
-         painter.drawRect(cb);
+         //painter.drawRect(cb);
 
 
          colorBarTopAxis->setRange(internalDataMin, internalDataMax);
@@ -216,12 +205,17 @@ void JKQTPColorPaletteStyleAndToolsMixin::cbDrawOutside(JKQTPEnhancedPainter& pa
          colorBarTopAxis->setOtherAxisWidth(cb.height());
          colorBarTopAxis->drawAxes(painter);
 
+         if ( JKQTPCADrawModeHasLine(colorBarTopAxis->getDrawMode1()) && JKQTPCADrawModeHasLine(colorBarTopAxis->getDrawMode2())) {
+             painter.setPen(p);
+             painter.drawLine(QLineF(cb.topLeft(), cb.bottomLeft()));
+             painter.drawLine(QLineF(cb.topRight(), cb.bottomRight()));
+         }
 
 
          cbParent->getMathText()->setFontSize(imageNameFontSize*cbParent->getFontSizeMultiplier());
          cbParent->getMathText()->setFontRomanOrSpecial(imageNameFontName);
          cbParent->getMathText()->parse(imageName);
-         cbParent->getMathText()->draw(painter, Qt::AlignHCenter|Qt::AlignVCenter, QRect(topSpace.right()-(topSpace.width()-barWidth)/2, topSpace.y(), (topSpace.width()-barWidth)/2, topSpace.height()));
+         cbParent->getMathText()->draw(painter, Qt::AlignHCenter|Qt::AlignVCenter, QRectF(topSpace.right()-(topSpace.width()-barWidth)/2, topSpace.y(), (topSpace.width()-barWidth)/2, topSpace.height()));
 
 
      }
@@ -241,7 +235,7 @@ int JKQTPColorPaletteStyleAndToolsMixin::getPalettesCount()
 QIcon JKQTPColorPaletteStyleAndToolsMixin::getPaletteIcon(int i)  {
     QImage img=getPaletteImage(i, static_cast<size_t>(JKQTPImageTools::PALETTE_ICON_WIDTH));
     QPixmap pix(JKQTPImageTools::PALETTE_ICON_WIDTH,8);
-    QRect r(0,0,JKQTPImageTools::PALETTE_ICON_WIDTH-1,7);
+    QRectF r(0,0,JKQTPImageTools::PALETTE_ICON_WIDTH-1,7);
     QPainter p(&pix);
     p.drawImage(r, img);
     p.setPen(QPen(QColor("black")));
@@ -275,7 +269,7 @@ QIcon JKQTPColorPaletteStyleAndToolsMixin::getPaletteKeyIcon(int i)
 {
     QImage img=getPaletteKeyImage(i, static_cast<size_t>(JKQTPImageTools::PALETTE_ICON_WIDTH), static_cast<size_t>(JKQTPImageTools::PALETTE_IMAGEICON_HEIGHT));
     QPixmap pix(JKQTPImageTools::PALETTE_ICON_WIDTH,JKQTPImageTools::PALETTE_IMAGEICON_HEIGHT);
-    QRect r(0,0,JKQTPImageTools::PALETTE_ICON_WIDTH-1,JKQTPImageTools::PALETTE_IMAGEICON_HEIGHT-1);
+    QRectF r(0,0,JKQTPImageTools::PALETTE_ICON_WIDTH-1,JKQTPImageTools::PALETTE_IMAGEICON_HEIGHT-1);
     QPainter p(&pix);
     p.drawImage(r, img);
     p.setPen(QPen(QColor("black")));
@@ -542,23 +536,9 @@ JKQTPColorPaletteWithModifierStyleAndToolsMixin::JKQTPColorPaletteWithModifierSt
     JKQTPColorPaletteStyleAndToolsMixin(parent)
 {
     modifierColorBarTopAxis=new JKQTPVerticalIndependentAxis(0, 100, 0, 100, parent);
-    modifierColorBarTopAxis->setDrawMode1(JKQTPCADMLine);
-    modifierColorBarTopAxis->setDrawMode2(JKQTPCADMcomplete);
     modifierColorBarTopAxis->setAxisLabel("");
-    modifierColorBarTopAxis->setMinTicks(3);
-    modifierColorBarTopAxis->setShowZeroAxis(false);
-    modifierColorBarTopAxis->setMinorTicks(0);
-    modifierColorBarTopAxis->setTickOutsideLength(0);
-    modifierColorBarTopAxis->setMinorTickOutsideLength(0);
     modifierColorBarRightAxis=new JKQTPHorizontalIndependentAxis (0, 100, 0, 100, parent);
-    modifierColorBarRightAxis->setDrawMode1(JKQTPCADMLine);
-    modifierColorBarRightAxis->setDrawMode2(JKQTPCADMcomplete);
     modifierColorBarRightAxis->setAxisLabel("");
-    modifierColorBarRightAxis->setMinTicks(5);
-    modifierColorBarRightAxis->setShowZeroAxis(false);
-    modifierColorBarRightAxis->setMinorTicks(0);
-    modifierColorBarRightAxis->setTickOutsideLength(0);
-    modifierColorBarRightAxis->setMinorTickOutsideLength(0);
     this->colorBarModifiedWidth=80;
     modifierMode=JKQTPMathImageModifierMode::ModifyNone;
 }
@@ -652,19 +632,18 @@ void JKQTPColorPaletteWithModifierStyleAndToolsMixin::cbDrawOutside(JKQTPEnhance
 
             //qDebug()<<"r: "<<imageName<<rightSpace;
 
-            QRect cb(static_cast<int>(rightSpace.x()+cbParent->pt2px(painter, colorBarOffset)), rightSpace.top()+(rightSpace.height()-barHeight)/2, static_cast<int>(cbParent->pt2px(painter, (modifierMode==JKQTPMathImageModifierMode::ModifyNone)?colorBarWidth:colorBarModifiedWidth)), barHeight);
+            QRectF cb(static_cast<int>(rightSpace.x()+cbParent->pt2px(painter, colorBarOffset)), rightSpace.top()+(rightSpace.height()-barHeight)/2, static_cast<int>(cbParent->pt2px(painter, (modifierMode==JKQTPMathImageModifierMode::ModifyNone)?colorBarWidth:colorBarModifiedWidth)), barHeight);
             painter.drawImage(cb, b.mirrored(true, false));
             QPen p=painter.pen();
             p.setColor(colorBarRightAxis->getAxisColor());
             p.setWidthF(qMax(JKQTPlotterDrawingTools::ABS_MIN_LINEWIDTH, cbParent->pt2px(painter, colorBarRightAxis->getLineWidth()*cbParent->getLineWidthMultiplier())));
-            painter.setPen(p);
-            painter.drawRect(cb);
 
             colorBarRightAxis->setRange(internalDataMin, internalDataMax);
             colorBarRightAxis->setAxisWidth(cb.height());
             colorBarRightAxis->setAxisOffset(cb.top());
             colorBarRightAxis->setOtherAxisOffset(cb.left());
             colorBarRightAxis->setOtherAxisWidth(cb.width());
+            //qDebug()<<"=================================================================\ncolorBarRightAxis:";
             colorBarRightAxis->drawAxes(painter);
 
             if (modifierMode!=JKQTPMathImageModifierMode::ModifyNone) {
@@ -674,12 +653,18 @@ void JKQTPColorPaletteWithModifierStyleAndToolsMixin::cbDrawOutside(JKQTPEnhance
                 modifierColorBarRightAxis->setOtherAxisOffset(cb.top());
                 modifierColorBarRightAxis->setOtherAxisWidth(cb.height());
                 modifierColorBarRightAxis->drawAxes(painter);
+            } else {
+                if ( JKQTPCADrawModeHasLine(colorBarRightAxis->getDrawMode1()) && JKQTPCADrawModeHasLine(colorBarRightAxis->getDrawMode2())) {
+                    painter.setPen(p);
+                    painter.drawLine(QLineF(cb.topLeft(), cb.topRight()));
+                    painter.drawLine(QLineF(cb.bottomLeft(), cb.bottomRight()));
+                }
             }
 
             cbParent->getMathText()->setFontSize(imageNameFontSize*cbParent->getFontSizeMultiplier());
             cbParent->getMathText()->setFontRomanOrSpecial(cbParent->getCurrentPlotterStyle().defaultFontName);
             cbParent->getMathText()->parse(imageName);
-            cbParent->getMathText()->draw(painter, Qt::AlignHCenter|Qt::AlignVCenter, QRect(rightSpace.x(), rightSpace.y(), rightSpace.width(), (rightSpace.height()-barHeight)/2));
+            cbParent->getMathText()->draw(painter, Qt::AlignHCenter|Qt::AlignVCenter, QRectF(rightSpace.x(), rightSpace.y(), rightSpace.width(), (rightSpace.height()-barHeight)/2));
 
 
         }
@@ -697,7 +682,7 @@ void JKQTPColorPaletteWithModifierStyleAndToolsMixin::cbDrawOutside(JKQTPEnhance
             }
 
 
-            QRect cb(topSpace.x()+(topSpace.width()-barWidth)/2, topSpace.bottom()-cbParent->pt2px(painter, colorBarOffset+((modifierMode==JKQTPMathImageModifierMode::ModifyNone)?colorBarWidth:colorBarModifiedWidth)), barWidth, cbParent->pt2px(painter, (modifierMode==JKQTPMathImageModifierMode::ModifyNone)?colorBarWidth:colorBarModifiedWidth));
+            QRectF cb(topSpace.x()+(topSpace.width()-barWidth)/2, topSpace.bottom()-cbParent->pt2px(painter, colorBarOffset+((modifierMode==JKQTPMathImageModifierMode::ModifyNone)?colorBarWidth:colorBarModifiedWidth)), barWidth, cbParent->pt2px(painter, (modifierMode==JKQTPMathImageModifierMode::ModifyNone)?colorBarWidth:colorBarModifiedWidth));
             //qDebug()<<"t: "<<imageName<<topSpace<<topSpace.bottom()<<colorBarOffset<<"\n     "<<cb;
             QTransform rm;
             rm.rotate(90);
@@ -705,8 +690,6 @@ void JKQTPColorPaletteWithModifierStyleAndToolsMixin::cbDrawOutside(JKQTPEnhance
             QPen p=painter.pen();
             p.setColor(colorBarTopAxis->getAxisColor());
             p.setWidthF(qMax(JKQTPlotterDrawingTools::ABS_MIN_LINEWIDTH, cbParent->pt2px(painter, colorBarTopAxis->getLineWidth()*cbParent->getLineWidthMultiplier())));
-            painter.setPen(p);
-            painter.drawRect(cb);
 
 
             colorBarTopAxis->setRange(internalDataMin, internalDataMax);
@@ -723,12 +706,18 @@ void JKQTPColorPaletteWithModifierStyleAndToolsMixin::cbDrawOutside(JKQTPEnhance
                 modifierColorBarTopAxis->setOtherAxisOffset(cb.left());
                 modifierColorBarTopAxis->setOtherAxisWidth(cb.width());
                 modifierColorBarTopAxis->drawAxes(painter);
+            } else {
+                if ( JKQTPCADrawModeHasLine(colorBarTopAxis->getDrawMode1()) && JKQTPCADrawModeHasLine(colorBarTopAxis->getDrawMode2())) {
+                    painter.setPen(p);
+                    painter.drawLine(QLineF(cb.topLeft(), cb.bottomLeft()));
+                    painter.drawLine(QLineF(cb.topRight(), cb.bottomRight()));
+                }
             }
 
             cbParent->getMathText()->setFontSize(imageNameFontSize*cbParent->getFontSizeMultiplier());
             cbParent->getMathText()->setFontRomanOrSpecial(cbParent->getCurrentPlotterStyle().defaultFontName);
             cbParent->getMathText()->parse(imageName);
-            cbParent->getMathText()->draw(painter, Qt::AlignHCenter|Qt::AlignVCenter, QRect(topSpace.right()-(topSpace.width()-barWidth)/2, topSpace.y(), (topSpace.width()-barWidth)/2, topSpace.height()));
+            cbParent->getMathText()->draw(painter, Qt::AlignHCenter|Qt::AlignVCenter, QRectF(topSpace.right()-(topSpace.width()-barWidth)/2, topSpace.y(), (topSpace.width()-barWidth)/2, topSpace.height()));
 
 
         }
diff --git a/lib/jkqtplotter/resources/styles/blackandwhite.ini b/lib/jkqtplotter/resources/styles/blackandwhite.ini
index 18a93cc5d5..5912a40428 100644
--- a/lib/jkqtplotter/resources/styles/blackandwhite.ini
+++ b/lib/jkqtplotter/resources/styles/blackandwhite.ini
@@ -45,11 +45,11 @@ axis_colorbar_right\grid\color=black
 axis_colorbar_right\grid\width=0.5
 axis_colorbar_right\minor_grid\color=black
 axis_colorbar_right\minor_grid\width=0.25
-axis_colorbar_right\minor_tick\inside_length=2
+axis_colorbar_right\minor_tick\inside_length=0
 axis_colorbar_right\minor_tick\label_font_size=7
-axis_colorbar_right\minor_tick\outside_length=0
-axis_colorbar_right\ticks\inside_length=4
-axis_colorbar_right\ticks\outside_length=0
+axis_colorbar_right\minor_tick\outside_length=2
+axis_colorbar_right\ticks\inside_length=0
+axis_colorbar_right\ticks\outside_length=4
 axis_colorbar_right\ticks\width=1
 axis_colorbar_right\zero_line\line_width=1
 axis_colorbar_top\line_width=1
@@ -57,11 +57,11 @@ axis_colorbar_top\grid\color=black
 axis_colorbar_top\grid\width=0.5
 axis_colorbar_top\minor_grid\color=black
 axis_colorbar_top\minor_grid\width=0.25
-axis_colorbar_top\minor_tick\inside_length=2
+axis_colorbar_top\minor_tick\inside_length=0
 axis_colorbar_top\minor_tick\label_font_size=7
-axis_colorbar_top\minor_tick\outside_length=0
-axis_colorbar_top\ticks\inside_length=4
-axis_colorbar_top\ticks\outside_length=0
+axis_colorbar_top\minor_tick\outside_length=2
+axis_colorbar_top\ticks\inside_length=0
+axis_colorbar_top\ticks\outside_length=4
 axis_colorbar_top\ticks\width=1
 axis_colorbar_top\zero_line\line_width=1
 graphs\auto_styles\color0=black
diff --git a/lib/jkqtplotter/resources/styles/default.ini b/lib/jkqtplotter/resources/styles/default.ini
index eac68f3816..81fda23e78 100644
--- a/lib/jkqtplotter/resources/styles/default.ini
+++ b/lib/jkqtplotter/resources/styles/default.ini
@@ -156,8 +156,8 @@ axis_y\minor_grid\color=gray
 axis_y\minor_grid\width=0.5
 axis_y\minor_grid\style=dot
 axis_colorbar_right\color=black
-axis_colorbar_right\draw_mode1=all
-axis_colorbar_right\draw_mode2=line+ticks
+axis_colorbar_right\draw_mode1=line
+axis_colorbar_right\draw_mode2=all
 axis_colorbar_right\line_width=1.5
 axis_colorbar_right\axis_lines_offset=0
 axis_colorbar_right\min_ticks=5
@@ -169,19 +169,19 @@ axis_colorbar_right\minor_tick\labels_enabled=false
 axis_colorbar_right\minor_tick\inside_length=1.5
 axis_colorbar_right\minor_tick\label_font_size=6.4
 axis_colorbar_right\minor_tick\label_full_number=true
-axis_colorbar_right\minor_tick\outside_length=1.5
+axis_colorbar_right\minor_tick\outside_length=0
 axis_colorbar_right\minor_tick\width=1
-axis_colorbar_right\minor_tick\count=1
+axis_colorbar_right\minor_tick\count=0
 axis_colorbar_right\ticks\date_format=dd.MM.yyyy
 axis_colorbar_right\ticks\datetime_format=dd.MM.yyyy HH:mm
 axis_colorbar_right\ticks\inside_length=3
 axis_colorbar_right\ticks\label_distance=3
 axis_colorbar_right\ticks\label_font_size=8
 axis_colorbar_right\ticks\mode=lin_or_power
-axis_colorbar_right\ticks\outside_length=3
+axis_colorbar_right\ticks\outside_length=0
 axis_colorbar_right\ticks\time_format=HH:mm
 axis_colorbar_right\ticks\width=1.5
-axis_colorbar_right\zero_line\enabled=true
+axis_colorbar_right\zero_line\enabled=false
 axis_colorbar_right\zero_line\line_width=1.5
 axis_colorbar_right\zero_line\color=black
 axis_colorbar_right\zero_line\style=solid
@@ -194,8 +194,8 @@ axis_colorbar_right\minor_grid\color=gray
 axis_colorbar_right\minor_grid\width=0.5
 axis_colorbar_right\minor_grid\style=dot
 axis_colorbar_top\color=black
-axis_colorbar_top\draw_mode1=all
-axis_colorbar_top\draw_mode2=line+ticks
+axis_colorbar_top\draw_mode1=line
+axis_colorbar_top\draw_mode2=all
 axis_colorbar_top\line_width=1.5
 axis_colorbar_top\axis_lines_offset=0
 axis_colorbar_top\min_ticks=5
@@ -207,19 +207,19 @@ axis_colorbar_top\minor_tick\labels_enabled=false
 axis_colorbar_top\minor_tick\inside_length=1.5
 axis_colorbar_top\minor_tick\label_font_size=6.4
 axis_colorbar_top\minor_tick\label_full_number=true
-axis_colorbar_top\minor_tick\outside_length=1.5
+axis_colorbar_top\minor_tick\outside_length=0
 axis_colorbar_top\minor_tick\width=1
-axis_colorbar_top\minor_tick\count=1
+axis_colorbar_top\minor_tick\count=0
 axis_colorbar_top\ticks\date_format=dd.MM.yyyy
 axis_colorbar_top\ticks\datetime_format=dd.MM.yyyy HH:mm
 axis_colorbar_top\ticks\inside_length=3
 axis_colorbar_top\ticks\label_distance=3
 axis_colorbar_top\ticks\label_font_size=8
 axis_colorbar_top\ticks\mode=lin_or_power
-axis_colorbar_top\ticks\outside_length=3
+axis_colorbar_top\ticks\outside_length=0
 axis_colorbar_top\ticks\time_format=HH:mm
 axis_colorbar_top\ticks\width=1.5
-axis_colorbar_top\zero_line\enabled=true
+axis_colorbar_top\zero_line\enabled=false
 axis_colorbar_top\zero_line\line_width=1.5
 axis_colorbar_top\zero_line\color=black
 axis_colorbar_top\zero_line\style=solid
diff --git a/lib/jkqtplotter/resources/styles/simple_axesoffset.ini b/lib/jkqtplotter/resources/styles/simple_axesoffset.ini
index fc8899e26e..a4e447fb2b 100644
--- a/lib/jkqtplotter/resources/styles/simple_axesoffset.ini
+++ b/lib/jkqtplotter/resources/styles/simple_axesoffset.ini
@@ -25,5 +25,3 @@ axis_y\ticks\label_distance=5
 axis_y\ticks\width=1
 axis_y\zero_line\line_width=1
 axis_y\zero_line\color=black
-axis_colorbar_right\zero_line\color=black
-axis_colorbar_top\zero_line\color=black
\ No newline at end of file