Solarez Color UV Resin is the best choice to make flies more attractive, perfect for hot spots & trigger points.
Translucent colors are wildly bright that further fluoresce in daylight and are vivid even in dim light. 3-dimensional colors are highly light scattering, Shimmering pearlescents, metallics and opalescents.
UV curing of color resins is always better when done in thinner applications. If mass is desired, do so with Solarez THICK or MEDIUM first, then color over that. All resins are compatible and stick well to each other.