Unless you bought from a know source you will never know if they are Citrinellus or Labiatus or any other possible mix of Amphilophus for that matter. At that size they are not fully morphed either and the way they look as adults may be nothing like the way they look now.
As far a color goes genetics will play a large part in the final apperance. In the wild the red color is and adaptaion of fish that inhabit deeper reagons of a lake below 25ft red is filtered out so a red fish appears black the barred varities live in the shallow sections where the barred coloration helps camoflage them among the rocks and vegatation. A good diet will bring out the max potential of your fish. I raised my RD on NLS and his color is very intense but again genetics plays a big role in the final outcome.
Anyone saying it's this or that is gussing. That's the answer