Java SE (Java Platform, Standard Edition)

Hi guys,
In the code below, I want the divider to be painted with a custom color such as red or whatever else.
Unfortunatelly, it doesn't.
I have even try to subclass

BasicSplitPaneDivider

and set the background to red. The result is still unsatisfactory.
Doesn't anyone knows how to fix it.

import java.awt.Color;
import java.awt.Dimension;
import java.awt.Graphics;

import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JSplitPane;
import javax.swing.JTextArea;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;
import javax.swing.border.Border;
import javax.swing.plaf.basic.BasicSplitPaneDivider;
import javax.swing.plaf.basic.BasicSplitPaneUI;

public class Splitter {
	private JSplitPane pane;

	public Splitter() {
		pane = new JSplitPane(JSplitPane.HORIZONTAL_SPLIT, false);
		setUp();
	}

	/**
	 * @return the pane
	 */
	public JSplitPane getPane() {
		return pane;
	}

	private void setUp() {
		JPanel rightPanel = new JPanel();
		rightPanel.setBackground(Color.white);
		JTextArea area = new JTextArea(40, 50);
		area.setText("Blablaghs");

		Dimension minimumSize = new Dimension(100, 50);
		area.setMinimumSize(minimumSize);
		rightPanel.setMinimumSize(minimumSize);

		pane.setRightComponent(rightPanel);
		pane.setLeftComponent(area);
		pane.setBorder(null);
		pane.setUI(new BasicSplitPaneUI() {
			public BasicSplitPaneDivider createDefaultDivider() {
				return new BasicSplitPaneDivider(this) {
					public void setBorder(Border b) {
					}

					@Override
					public void paint(Graphics g) {
						g.setColor(Color.red);
						super.paint(g);
					}
				};
			}
		});
	}

	private static void createAndShow() {
		try {
			UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
		} catch (ClassNotFoundException e) {
			e.printStackTrace();
		} catch (InstantiationException e) {
			e.printStackTrace();
		} catch (IllegalAccessException e) {
			e.printStackTrace();
		} catch (UnsupportedLookAndFeelException e) {
			e.printStackTrace();
		}

		Splitter sp = new Splitter();
		JFrame frame = new JFrame("Frame");
		frame.getContentPane().add(sp.getPane());
		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		frame.setSize(300, 300);
		frame.setVisible(true);
	}

	public static void main(String[] a) {
		createAndShow();
	}
}

Regards.

Edmond