Salut!

Je suppose que clea doit exister, mais voici en tout cas une solution possible. A toi d'adapter...

import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Component;
import java.awt.Container;
import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.color.ColorSpace;
import java.awt.event.ActionListener;
import java.awt.image.BufferedImage;

import javax.swing.DefaultComboBoxModel;
import javax.swing.ImageIcon;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JList;
import javax.swing.JPanel;
import javax.swing.ListCellRenderer;

/**
 * Created on 15-avr.-07
 * 
 * @author: HackTrack
 */

public class ComboColorChooser extends JComboBox {
	private Component target;

	private MyColor[] colors;

	public ComboColorChooser(Component target) {
		this.target = target;
		initializeCombo();
	}

	private void initializeCombo() {
		colors = new MyColor[3];
		colors[0] = new MyColor(Color.RED.getRGB(), "Rouge");
		colors[1] = new MyColor(Color.BLUE.getRGB(), "Bleu");
		colors[2] = new MyColor(156, 58, 97, "Horrible");
		DefaultComboBoxModel model = new DefaultComboBoxModel(colors);
		setModel(model);
		setRenderer(new ListCellRenderer() {
			public Component getListCellRendererComponent(JList list, Object value, int index, boolean isSelected, boolean cellHasFocus) {
				System.out.println(value.toString());
				MyColor myColor = (MyColor) value;
				int w = 20;
				int h = 20;
				BufferedImage img = new BufferedImage(w, h, BufferedImage.TYPE_INT_ARGB);
				Graphics g = img.getGraphics();
				g.setColor(myColor);
				g.fillRect(0, 0, w, h);
				ImageIcon icon = new ImageIcon(img);
				JLabel label = new JLabel(myColor.getColorName(), icon, JLabel.LEADING);
				return label;
			}
		});
		addActionListener(new ActionListener() {
			public void actionPerformed(java.awt.event.ActionEvent e) {
				JComboBox source = (JComboBox)e.getSource();
				Color color = (MyColor)source.getSelectedItem();
				target.setBackground(color);
				target.repaint();
			};
		});
	}

	class MyColor extends Color {
		private String colorName;

		public MyColor(int rgb, String colorName) {
			super(rgb);
			this.colorName = colorName;
		}

		public MyColor(int rgba, boolean hasalpha, String colorName) {
			super(rgba, hasalpha);
			this.colorName = colorName;
		}

		public MyColor(int r, int g, int b, String colorName) {
			super(r, g, b);
			this.colorName = colorName;
		}

		public MyColor(float r, float g, float b, String colorName) {
			super(r, g, b);
			this.colorName = colorName;
		}

		public MyColor(ColorSpace cspace, float[] components, float alpha, String colorName) {
			super(cspace, components, alpha);
			this.colorName = colorName;
		}

		public MyColor(int r, int g, int b, int a, String colorName) {
			super(r, g, b, a);
			this.colorName = colorName;
		}

		public MyColor(float r, float g, float b, float a, String colorName) {
			super(r, g, b, a);
			this.colorName = colorName;
		}

		public String getColorName() {
			return colorName;
		}
	}

	public static void main(String[] args) {
		JFrame view = new JFrame();
		Container c = view.getContentPane();
		c.setLayout(new BorderLayout());
		JPanel panel = new JPanel();
		panel.setPreferredSize(new Dimension(320, 200));
		c.add(panel, BorderLayout.CENTER);
		c.add(new ComboColorChooser(panel), BorderLayout.NORTH);

		view.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		view.pack();
		view.setVisible(true);
	}

}