There should be multiple armour styles (racial and class) that anyone can wear. We can already craft and collect herbs, let us make dyes as well.
Actualy there allready is ... kinda. :-/
Some NPC have alterned collors for armour, but when you put it on ... its once aggain the same generic armor you allready had.
It can be seen with few mage "robes" ... and with Githyanki armor, Beretha have Silver/Red colloring, but when you put it on its Silver/Black for some reason. :-/