code: public void setForegroundType(final ForegroundType FOREGROUND_TYPE) {
          getModel().setForegroundType(FOREGROUND_TYPE);
          init(getInnerBounds().width, getInnerBounds().height);
          repaint(getInnerBounds());
      }
docs: Defines the type of foreground that will be used for the radial gauge.
  There area three types available.
  @param FOREGROUND_TYPE