public void setBackgroundColors(Color background, Color selectedBackground) {
   DataListItemRenderer cellRenderer = (DataListItemRenderer) getCellRenderer();
   cellRenderer.setItemBackground(background);
   cellRenderer.setSelectedItemBackground(selectedBackground);
 }
 public void setForegroundColors(Color foreground, Color selectedForeground) {
   DataListItemRenderer cellRenderer = (DataListItemRenderer) getCellRenderer();
   cellRenderer.setItemForeground(foreground);
   cellRenderer.setSelectedItemForeground(selectedForeground);
 }