public Set<Integer> getColorsInHand() {
		Set<Integer> colorArray = new TreeSet<Integer>();
		for (int i = 0; i < this.hand.length; i++) {
			switch(this.hand[i].getColor()) {
				case "blue":	colorArray.add(1);
								break;
				case "green":	colorArray.add(2);
								break;
				case "red":		colorArray.add(3);
								break;
				case "white":	colorArray.add(4);
								break;
				case "yellow":	colorArray.add(5);
								break;
			}
		}
		return colorArray;
	}