public final static SystemColor desktop = new SystemColor((byte)DESKTOP);

    public final static SystemColor activeCaption = new SystemColor((byte)ACTIVE_CAPTION);

    public final static SystemColor activeCaptionText = new SystemColor((byte)ACTIVE_CAPTION_TEXT);

	...
	
	private static int[] systemColors;

    static {
      updateSystemColors();
    }

    /**
     * Called from <init> & toolkit to update the above systemColors cache.
     */
    private static void updateSystemColors() {
        if (!GraphicsEnvironment.isHeadless()) {
            Toolkit.getDefaultToolkit().loadSystemColors(systemColors);
        }
    }

	private SystemColor(byte index) {
        super(0,0);
		value = index;
    }

    public int getRGB() {
	return systemColors[value];
    }

package com.cdai.jd;

import java.awt.SystemColor;
import java.util.HashMap;

public class SystemColorTest {

	public static void main(String[] args) {
		SystemColorTest tester = new SystemColorTest();
		
		// 1.Test for Palette color
		System.out.println(tester.convertVB2JavaColor(0x80000007) == SystemColor.menuText.getRGB());
		
		// 2.Test for System color
		System.out.println(tester.convertVB2JavaColor(0x004207) == (0xFF | 0x4207));
		
		// 3.Test for invalid input argument
		try {
			System.out.println(tester.convertVB2JavaColor(0x8100000A));
		} catch (Exception e) {
			System.out.println("Expect exception here.");
		}
	}

	private static HashMap<Integer,Integer> VB2JavaSystemColorMapping = 
				new HashMap<Integer,Integer>();
	
	
	/**
	 * 	Color constants refer to:
	 * 		http://msdn.microsoft.com/en-us/library/office/gg264801.aspx
	 */
	
	static {
		VB2JavaSystemColorMapping.put(0x80000000,SystemColor.scrollbar.getRGB());
		VB2JavaSystemColorMapping.put(0x80000001,SystemColor.desktop.getRGB());
		VB2JavaSystemColorMapping.put(0x80000002,SystemColor.activeCaption.getRGB());
		VB2JavaSystemColorMapping.put(0x80000003,SystemColor.inactiveCaption.getRGB());
		VB2JavaSystemColorMapping.put(0x80000004,SystemColor.menu.getRGB());
		VB2JavaSystemColorMapping.put(0x80000005,SystemColor.window.getRGB());
		VB2JavaSystemColorMapping.put(0x80000006,SystemColor.scrollbar.getRGB());	//Window frame color?
		VB2JavaSystemColorMapping.put(0x80000007,SystemColor.menuText.getRGB());
		VB2JavaSystemColorMapping.put(0x80000008,SystemColor.windowText.getRGB());
		VB2JavaSystemColorMapping.put(0x80000009,SystemColor.activeCaptionText.getRGB());
		VB2JavaSystemColorMapping.put(0x8000000A,SystemColor.activeCaptionBorder.getRGB());
		VB2JavaSystemColorMapping.put(0x8000000B,SystemColor.inactiveCaptionBorder.getRGB());
		VB2JavaSystemColorMapping.put(0x8000000C,SystemColor.scrollbar.getRGB());	//Background color of multiple-document interface (MDI) applications?
		VB2JavaSystemColorMapping.put(0x8000000D,SystemColor.textHighlight.getRGB());
		VB2JavaSystemColorMapping.put(0x8000000E,SystemColor.textHighlightText.getRGB());
		VB2JavaSystemColorMapping.put(0x8000000F,SystemColor.scrollbar.getRGB());	//Color of shading on the face of command buttons?
		VB2JavaSystemColorMapping.put(0x80000010,SystemColor.scrollbar.getRGB());	//Color of shading on the edge of command buttons?
		VB2JavaSystemColorMapping.put(0x80000011,SystemColor.textInactiveText.getRGB());
		VB2JavaSystemColorMapping.put(0x80000012,SystemColor.controlText.getRGB());
		VB2JavaSystemColorMapping.put(0x80000013,SystemColor.inactiveCaptionText.getRGB());
		VB2JavaSystemColorMapping.put(0x80000014,SystemColor.controlHighlight.getRGB());
		VB2JavaSystemColorMapping.put(0x80000015,SystemColor.controlDkShadow.getRGB());
		VB2JavaSystemColorMapping.put(0x80000016,SystemColor.controlLtHighlight.getRGB());
		VB2JavaSystemColorMapping.put(0x80000017,SystemColor.infoText.getRGB());
		VB2JavaSystemColorMapping.put(0x80000018,SystemColor.info.getRGB());
	}
	
	
	/**
	 * Convert color hex value in VB to Java color hex.
	 * 
	 * @param vbColorHex	0x80000000 - 0x80000018 for VB system color,* 							0x00AB1234 for palette color
	 * 
	 * @return					Bits 24-31 are alpha (FF as default),* 								16-23 are red,* 								8-15 are green,* 								0-7 are blue
	 */
	public int convertVB2JavaColor(int vbColorHex) {
		int javaColorHex;
		int highByte = (vbColorHex >>> 24);
		
		if (highByte == 0) {			// Palette color if high byte is 0.
			javaColorHex = 0xFF | vbColorHex;
		}
		else if (highByte == 128) {	// System color if highest bit is 1
			javaColorHex = VB2JavaSystemColorMapping.get(vbColorHex);
		}
		else {			
			throw new IllegalArgumentException("Illegal hex color argument: " + vbColorHex);
		}
		
		return javaColorHex;
	}
	
}