Board Thread:Off Topic/@comment-25396609-20151120024732/@comment-26397825-20151230233710

Black aura makes it too similar to Grimm, and even the character which has black as their main colour scheme (most notable Blake) don't have black aura. In fact, not a single person in the show has black aura so far - the only time we've seen black was the visual effect RT made for Pyrrha's semblance. And that was only visible to us viewers as an indicator that she was doing something, as every other time we have seen her use her semblance she hasn't glowed at all.