Set JOptionPane background color

After i make some review over internet and java forum lastly i understand how to change JOptionPane background color.You can try compile and execute simple code below and see it's result.

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COMPLETE SOURCE CODE FOR : SetJOptionPaneBackgroundColor.java
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::Click Here To Download This Java Source Code::

import javax.swing.JOptionPane;
import javax.swing.UIManager;

import javax.swing.plaf.ColorUIResource;

public class SetJOptionPaneBackgroundColor
{
public static void main(String[]args)
{
UIManager uim=new UIManager();
uim.put("OptionPane.background",new ColorUIResource(255,0,0));
uim.put("Panel.background",new ColorUIResource(255,0,0));

JOptionPane.showMessageDialog(null,"Hello world","HELLO WORLD",JOptionPane.INFORMATION_MESSAGE);
}
}

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JUST COMPILE AND EXECUTE IT
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