Turbine, please consider making the dragon armor more flavorized. Such as Green augment slot for the black, Orange for the Blue and purple for the white.
With green the black could be a flexible version of boosts or defensive. Like striding 30% or 35 HP. It takes it out of the generic mold of augments.
With Orange you make the more caster oriented blue one that can either boost DC or such or spell power and with purple the white becomes more a defensive armor that can be added spell power (perfect for something like a Paladin or melee Divine).
I don't know if the limitation of multi slotted colors on armor is because what DR breaking features would do to armor, but I'm just thinking about functionality and not so much about code. This could of course be part of the tier 2 or tier 3 upgrade.