public static Color[] randomColors(int numColors) {
		Color[] colors = new Color[numColors];
		Random randGen = new Random(System.currentTimeMillis());
		for(int i = 0; i < numColors; ++i) {
			colors[i] = 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);
		}
		return colors;
	}