I like Callo's, I just don't have any yet. I did see some in person on a recent road trip to the LFS's of new jersey, and they are quite impressive looking fish, but as DJRansome said, the photos don't do them justice.
Yeah getting photos to show their colour is impossible
I keep 1M and 4F in a 3x18x20 tank with Nigripinnis and the pleuro male has 3-5 pits and all females have held. I have two holding at the moment. In my experience they're not too aggressive but does get angry if a female doesn't want to breed lol