changing the background of JOptionPane

Question

I change the background of JOptionPane with this code :

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

but the result doesn't look like what I expect

Answer 1

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