public static String calculateColorRatio(Deck deck) {
		int yellow = 0;
		int red = 0;
		int blue = 0;
		int green = 0;
		for (Card c: deck) {
			if (c.getColor().getType() == TypeC.YELLOW) 
				yellow++;
			if (c.getColor().getType() == TypeC.RED)
				red++;
			if (c.getColor().getType() == TypeC.BLUE)
				blue++;
			if (c.getColor().getType() == TypeC.GREEN)
				green++;
		}
		String str = "Color Stats:"
				+ "\nYellow: " + yellow
				+ "\nRed: " + red
				+ "\nBlue: " + blue
				+ "\nGreen: " + green;
		return str;
	}