Most cichlids don't have good colouring when you get them, they are usually washed out looking. But once you get them home, feed them some good food, a couple weeks later they look great. Look for one with the most colour and sparkle. One that stands out and he should look a lot better after you give him some good food and once he settles in. Fish stores I think are always stressful on them, people always walking by, tapping on the glass, constantly netting them makes them all washed out. I just look for the most colourful and outgoing cichlid.