My husband worked almost 18yrs for a company that worked with colors. It would color plastic pellets for all kinds of things. We've had mattresses that basically had an outline of him because the color would seep from his pores when he sweat at night! Anyway this is a job that is very dirty. The company is called Breen Color Concentrates in Lambertville, NJ. the # is 609-397-8200. If you decide to go tell them "Mel" sent you.
Wendy