My company wants to use colored dye in our oils/lubricates to determine what machines the leaks are coming from. I have found one company that supplies a liquid dye in two colors, blue & red. We were hoping for a little more choice of colors. I have heard of a possible powdered dye for this use but cannot find any information on it. Does anyone know of a distributer that can help me & does anyone know if a powdered dye exists for this use?