public static Color randomColor() {
		Random randGen = new Random(System.currentTimeMillis());
		return new Color((double) Math.abs(randGen.nextInt()%256)/255.0,
						 (double) Math.abs(randGen.nextInt()%256)/255.0,
						 (double) Math.abs(randGen.nextInt()%256)/255.0, 1.0);
	}