Bug Info:
=========
JFrame background is not looks similar while compare with native frame in winxp.

Run the below specify code in winxp and compare with native frame.

Source Code:
============
import javax.swing.*;
public class FrameTest extends JFrame {

    /** Creates new form FrameTest */
    public FrameTest() {
        try{
           javax.swing.UIManager.setLookAndFeel(javax.swing.UIManager.getSystemLookAndFeelClassName());
        }catch(Exception exp_){}
        initComponents();
    }

    private void initComponents() {

        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
        java.awt.Dimension screenSize = java.awt.Toolkit.getDefaultToolkit().getScreenSize();
        setBounds((screenSize.width-265)/2, (screenSize.height-248)/2, 265, 248);
        this.setVisible(true);
    }

    /**
     * @param args the command line arguments
     */
    public static void main(String args[]) {
         new FrameTest();
    }


}

Please check the attached image for finding the difference.