I have 2 Clownfish Amphiprion ocellaris. One is about 2 1/2 inches long the other about 1 1/2 inches long. I feed them frozen fresh and cooked shrimp, frozen clam meat, frozen salmon, frozen deer heart(out of that right now),NutriDiet Marine flakes and OMEGA ONE Shrimp Pellets and Algae flakes. When I received them they were orange now they are brown. The white color is as bright as ever. Any suggestions. They eat well and act fine.