Thanks Kevin. I'd really like to be able to make some flat texture material to use with effects, and unfortunately copying the white star material isn't cutting it, as that lacks the color of the texture (possibly because it's using a diffuse-style effect node?).
Example of flat textures used with effects:
Civil Auras Pet Pal Talent EffectThis one worked fine as a copy of the white star material, since the icon was black and white.
