Fluorescent Color Powder - Sky Blue 15 Gms Jar In comparison to normal colors, these florescent colors pop and made out of hgihest quality with the best effect one would get, since they are much brighter and noticeable than their counterparts. These fluorescent colorants work great alone or blend them to create all kinds of great colors! It is water soluble and easyly blends with Epoxy Resin and you can also varnish for glossy look, Concentrations to be used vary on the formulation you are trying to make.