I agree with this, I have been hoping for either armour dying NPC's (made a thread about in fact) or an extension of the crafting system to allow dying after production.

I can't remember which MMO (Runes of Magic I think) it was I played but one of them allowed you to select a part of the armour and dye it a specific colour, and it did a pretty good job of making the game a lot more customisable.

I would really prefer an NPC over craft based dying for the simple reason it would remove money from the game, although I'm sure every crafter in Erozea will fight me on that :P