クラスの静的変数と静的メソッドは、クラス名で直接アクセスできます.

public class XiangQi extends JFrame implements ActionListener{
	//       
	public static final Color bgColor = new Color(245,250,160);
	//            
	public static final Color focusbg = new Color(242,242,242);
	//           
	public static final Color focuschar = new Color(96,95,91);
	
	public static final Color color1 = new Color(249,183,143);
	public static final Color color2 = new Color(0,0,0);