
As Asyria said, the Armoury System is just a tool to change sets of armor quickly. It's not a costume system at all. Squee said they would eventually implement one of those.
The only way to get other clothes is to do quests or buy them from vendors. Treasure chests in dungeons have a chance to give you a unique looking armor set, but it comes with a fixed color.
The only way to get other clothes is to do quests or buy them from vendors. Treasure chests in dungeons have a chance to give you a unique looking armor set, but it comes with a fixed color.