/**
  * Set the foreground color (box, cursor and scales). All specified values should be in the range
  * <CODE>[0.0f - 1.0f]</CODE>.
  *
  * @param r Red value.
  * @param g Green value.
  * @param b Blue value.
  * @exception RemoteException If there was a problem making this change in a remote collaborative
  *     <CODE>DisplayRenderer</CODE>.
  * @exception VisADException If this renderer as not yet been assigned to a <CODE>Display</CODE>.
  */
 public void setForegroundColor(float r, float g, float b) throws RemoteException, VisADException {
   if (rendererControl == null) {
     throw new VisADException("DisplayRenderer not yet assigned to a Display");
   }
   rendererControl.setForegroundColor(r, g, b);
 }