我如何才能使JFrame背景疯狂地改变颜色？

这是我对您的GUI的看法，看来工作还可以。非常激烈。您如何执行更新？在另一个线程上？

final Jframe frame = new Jframe();frame.setSize(600, 400);frame.getContentPane().setLayout(new GridLayout(3, 1, 20, 20));final JPanel[] panels = new JPanel[3];for (int i = 0; i < panels.length; i++) {    panels[i] = new JPanel();    panels[i].setOpaque(true);    frame.getContentPane().add(panels[i]);}frame.setVisible(true);ActionListener action = new ActionListener() {    @Override    public void actionPerformed(ActionEvent e) {        Random gen = new Random();        Color color = new Color(gen.nextInt(256), gen.nextInt(256),     gen.nextInt(256));        frame.getContentPane().setBackground(color);        for (int i = 0; i < panels.length; i++) { color = new Color(gen.nextInt(256), gen.nextInt(256),         gen.nextInt(256)); panels[i].setBackground(color);        }    }};Timer t = new Timer(100, action);t.setRepeats(true);t.start();