Java JMenu

public void corMenu(JMenuBar menuBar1) {
	
	//alteracao especifica
	jMenuBar1.setOpaque(true);
	
	jMenuBar1.setUI(new BasicMenuBarUI() {
		public void paint(Graphics g, JComponent c) {
			g.setColor(new Color(105, 178, 225));
			g.fillRect(0, 0, c.getWidth(), c.getHeight());
		}
	});
	
	MenuElement[] menus1 = menuBar1.getSubElements();
	
	for (MenuElement menu1 : menus1) {
		JMenu menuA = (JMenu) menu1.getComponent();
	    changeComponentColors(menuA);
	    menuA.setOpaque(true);
		
		MenuElement[] menuElements = menuA.getSubElements();
		
		for (MenuElement popupMenuElement : menuElements) {
			JPopupMenu popupMenu = (JPopupMenu) popupMenuElement.getComponent();
			popupMenu.setBorder(null);
			MenuElement[] menuItens = popupMenuElement.getSubElements();
			
			for (MenuElement menuItemElement : menuItens) {
				JMenuItem menuItem = (JMenuItem) menuItemElement.getComponent();
				changeComponentColors(menuItem);
				menuItem.setOpaque(true);
			}
		}
	}