More spell customization

Wouldn’t it be cool to customize spell appearance? Think hunter’s arcane shot being white, or black glow effect… or warlock drain soul to be red like sucking anima or blood out of a target. Keep same graphic but change color saturation with glyphs or quests. Anyone ever thought their signature spell would look cool as a different color?

I would honestly like it if i could turn my holy spells red/orange like fire