Hey DC,
They are probably black O's. I have a feeling that a lot of these fish change colors when they mature anyway. I've heard of so called Onyx percs that end up as regular percs, so the name should stand as is. Thanks for the complement.
The female is really nasty. The male keeps trying to get into the pot with her. He's very gentle about it, but she won't budge. It's really getting annoying.