Next time you have to pee in a cup, you might make it more fun. In this case, make your pee funny colored. Here are some colors and the foods you need to eat to get those colors. Mind you, you need to eat almost nothing but this food to get the color:
Red Urine: Beets, Blackberries, red food-coloring
Yellow-Brown Urine: Carrots, B-complex vitamins
Deep yellow: Vitamin C
Blue-green: methylene blue
Methylene blue is a harmless coloring agent used to make aquariums blue.