Thanks for the info always nice to find a question already answered clearly in the forums.
So the colour of the aura depends on how far upgraded certain armor pieces are? Does anybody know the boundaries and whether it refers to the M.def stat or the Energy Def stat?
I've never seen +15 on armor before but I have seen it on a weapon.
Keep in mind, you could always buy a stack of cheap armor (so it won't matter if they break) and keep upgrading them until you get +15. You could use that armor just for looks.
Bah, the aura's I've wanted but you have to have hard to get armor to get them? That blows. They really should have just made it selectable. After all, now some people might just go out of their way to get the aura they want even if the armor isn't at its maximum. It also gives you an idea of what your opponent's equipment is like ahead of time, which can be a good and a bad thing.