Colors shift and move right under your eyes. Try and catch them if you can! Depending on how the light shines on your Oil Slick, you might see purple, pink, gold, yellow, or emerald green.
"Choose your favorite color. You can use Thinking Putty as a toy, a stress ball, a squeeze toy, or as therapy putty. As an office toy, Thinking Putty will draw the jealousy of your co-workers. As a toy, you will never be able to put it down. I promise!" - Crazy Aaron