改变JOptionPane的背景

Question

我使用以下代码更改了JOptionPane的背景：

 UIManager.put("OptionPane.background",new ColorUIResource(204, 255, 255));

但结果看起来不像我期望的那样

Answer 1

UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
UIManager.put("OptionPane.background", Color.BLUE);
UIManager.put("Panel.background", Color.BLUE);
JOptionPane.showConfirmDialog(null, "YOUR INFORMATION HERE");