@Override
 protected void initialize() {
   super.initialize();
   setGroupEnablement();
 }
 @Override
 public void propertyChange(PropertyChangeEvent event) {
   super.propertyChange(event);
   setGroupEnablement();
 }
 @Override
 protected void performDefaults() {
   super.performDefaults();
   horizontalColorFieldEditor.setEnabled(true, colorGroup);
 }