they do have different glow in colors my suggestion to you is by the regular glow-in-the-dark powder you can add it to any color in it works beautiful there's no need to buy 40 different bottles of different glow-in-the-dark powder colors. Glow-in-the-dark original powder goes a long ways you need any more information please post it. No problem on mixing this stuff directly into your hot plastic it stirs up beautiful have fun.