menuItem.setOpaque(true);
  protected void installDefaults()  {    LookAndFeel.installBorder(menuItem, "Menu.border");    LookAndFeel.installColorsAndFont(menuItem, "Menu.background",                                     "Menu.foreground", "Menu.font");    menuItem.setMargin(UIManager.getInsets("Menu.margin"));    acceleratorFont = UIManager.getFont("Menu.acceleratorFont");    acceleratorForeground = UIManager.getColor("Menu.acceleratorForeground");    acceleratorSelectionForeground = UIManager.getColor("Menu.acceleratorSelectionForeground");    selectionBackground = UIManager.getColor("Menu.selectionBackground");    selectionForeground = UIManager.getColor("Menu.selectionForeground");    arrowIcon = UIManager.getIcon("Menu.arrowIcon");    oldBorderPainted = UIManager.getBoolean("Menu.borderPainted");    menuItem.setOpaque(true);  }