I'd like to see a full customization system... one that takes advantage of the full spectrum of color, not just a set of pre-defined hues. Create item mods that affect the saturation of primary colors (+white & black) with a couple more to affect the shine of the armor (who doesn't want to buff or debuff their armor?). Digital color is already based on these components of the light spectrum, so it should fit easily into code. Create an interface to apply these types of mods to the primary or secondary color of the armor (not unlike GW2), throw in a handful of base-color kits for quick-customization, and everyone can get the color/shade they want (ie: not everyone will be painted "black" just because the other available colors look like garbage).