Changing Arrows and Color of a JScrollBar inside of a JScrollPane

Question

Hi. I can't believe this hasn't been asked and answered before but I can't find it in these forums if it has.
I am trying to create a JScrollPane in a touchscreen based application - no mouse... The default scrollbar
in my JScrollPane is too small for large fingers. I have successfully increased the size of the scrollbar
to a usable size using: UIManager.put("scrollbar.width", 75).
My next problem is two-fold.
1) The arrows at top and bottom of the scrollbar are now heavily pixelated (i.e. jagged and blocky) and
look like we zoomed in too much on a bitmap. How can I change these arrows to a graphic that is
more related to the current size of my scrollbar?
2) The color of the scrollbar is shades of 'baby blue'. My color scheme for my application is shades of
beige or brown. This makes the scrollbar stand out like a sore thumb. How can I change the color
of the scrollbar?
Note: This is being coded in NetBeans 6.7.1 but I can't find any property in the visual editor that covers
my problems.
Also, I came across the UIManager.put("scrollbar.width", xx) from googling. Is there an official (complete)
list of the properties available to the UIManager?
Thanks

Answer 1

To help out anyone who has been struggling with this as I have, here is the final solution we were able to use. We only needed to work with the vertical scroll bar, but it should be easy to work with now that a better part of the work is done. I do hope this is helpful.
     public ReportDisplayFrame()
          UIManager.put( "ScrollBar.width", 75);
          RDFScrollBarUI rdfScrlBarUI = new RDFScrollBarUI();
          rdfScrlBarUI.setButtonImageIcon( new ImageIcon( "C:/company/images/upArrow.jpg") , rdfScrlBarUI.NORTH);
          rdfScrlBarUI.setButtonImageIcon( new ImageIcon( "C:/company/images/downArrow.jpg") , rdfScrlBarUI.SOUTH);
          tempScrlBar = new JScrollBar();
          tempScrlBar.setBlockIncrement( 100);
          tempScrlBar.setUnitIncrement( 12);
          tempScrlBar.setUI( rdfScrlBarUI);
// other constructor code //
          rdfScreenRedraw();
     private void rdfScreenRedraw()
          String methodName = "rdfScreenRedraw()";
          logger.log(Level.INFO, methodName + ": Revalidating: mainPanel Thread = ["+Thread.currentThread().getName()+"]");
          jPanelRpt.revalidate();
          jPanelRpt.repaint();
     class RDFScrollBarUI extends BasicScrollBarUI {
          private ImageIcon decImage = null;
          private ImageIcon incImage = null;
          public void setThumbColor(Color thumbColor) {
               this.thumbColor = thumbColor;
          public void setThumbDarkShadowColor(Color thumbDarkShadowColor) {
               this.thumbDarkShadowColor = thumbDarkShadowColor;
          public void setThumbHighlightColor(Color thumbHighlightColor) {
               this.thumbHighlightColor = thumbHighlightColor;
          public void setThumbLightShadowColor(Color thumbLightShadowColor) {
               this.thumbLightShadowColor = thumbLightShadowColor;
          public void setTrackColor(Color trackColor) {
               this.trackColor = trackColor;
          public void setTrackHighlightColor(Color trackHighlightColor) {
               this.trackHighlightColor = trackHighlightColor;
          public void setButtonImageIcon( ImageIcon theIcon, int orientation)
               switch( orientation)
                    case NORTH:
                         decImage = theIcon;
                         break;
                    case SOUTH:
                         incImage = theIcon;
                         break;
                    case EAST:
          if (scrollbar.getComponentOrientation().isLeftToRight())
                              decImage = theIcon;
                         else
                              incImage = theIcon;
                         break;
                    case WEST:
          if (scrollbar.getComponentOrientation().isLeftToRight())
                              incImage = theIcon;
                         else
                              decImage = theIcon;
                         break;
          @Override
          protected JButton createDecreaseButton(int orientation) {
               JButton button = null;
               if ( decImage != null)
                    button = new JButton( decImage);
               else
                    button = new BasicArrowButton(orientation);
               button.setBackground( new Color( 180,180,130));
               button.setForeground( new Color( 236,233,216));
               return button;
          @Override
          protected JButton createIncreaseButton(int orientation) {
               JButton button = null;
               if ( incImage != null)
                    button = new JButton( incImage);
               else
                    button = new BasicArrowButton(orientation);
               button.setBackground( new Color( 180,180,130));
               button.setForeground( new Color( 236,233,216));
               return button;
     }