Well, IMO materias should be the "effect customization" so colors having effect aren't really needed.

But seems like Yoshida wants colors to have effect...so the best is just tossing feedback regarding colors being related to effects.

IMO woud be much easier we just having a better materia system where 5 materias would be the common, not a strike of luck...having lesser effect per materia but adding stuff like materia combos, affinities, etc...making it in a way all materias have an use...even those "Chocobo down" Materias...

I already suggested him this to them a while ago...weakening materias overall effect but we being allowed to do equip up to 5 materias (even if just over time, with fail risk going down as the spiritbond goes up so ppl would need to use the gear a while before adding a new materia if they want it to be safe) and just removing every single effect from crafted gear, leaving just materias on them.