cockatoo dwarf cichlids

I recently got two cockatoo cichlids and when I first got them they were both very colorful. I think one is a female and one is a male, but the female has lost all her yellow color. Could this be because the “male” is actually a female and is the dominant one? The “male” is always chasing away...

I Am getting a 55 gallon aquarium and want to breed Cichlids. Could I breed Cockatoo Dwarf Cichlids? I am thinking 1 male and 3 females with a group of Neon Tetras. Could this work. I hear that Cockatoo Dwarf Cichlids are pretty social and easy to breed. Any comments would be appreciated also I...