Man, I sure wish I could get my zo's to color up like you guys. Get them nice and pretty when they just came in from the reef and then they turn brownish blah. Sigh, I know it's my lighting. I have seen Marty's tanks and his zo's really do glow like that, just amazing. I do get good color out of the apple greens and if I put the zo's all the way at the top of the tank under new bulbs.
The orange people eaters Marty gave me are purple under pc/actinic VHO's which is really nice. Still pretty brown under 10K halides, even with PC actinics. So here is a picture of one people eater surrounded by some other zo's and shrooms, and some of the other zo's I have as well.
Not sure what the bluish polyps are, technically. They also come in mint green and can be quite invasive.