code: private void paintCloseHover(Graphics2D g, JComponent c, int width, int height) {
          paintClose(g, c, width, height, hover);
      }
docs: Paint the background mouse-over state.
  
  @param g      the Graphics2D context to paint with.
  @param c      the component.
  @param width  the width of the component.
  @param height the height of the component.