Please, pretty please, give us the ability to dye weapons, shields and saddles (and decor items like curtains, beds and carpets would be awesome too).
I’ve seen plenty of threads on this over the years (I started some of them). I don’t know if bringing it up again and again does any good, but from what I’ve seen on past threads there are plenty of players who want these.
I’m not making any threats, Funcom, but if you want your treasure cache to remain safe, you might want to consider giving this horde of barbarian exiles what they want. 
…(Did starting this thread off with a “pretty please” detract from the not-so-subtle threat?)