Thanks everyone.
Vera, they were raised on mix diet...their color is part genetics and part diet...I would guess the degree of color from diet comes largely from my surf and Turf homemade foods( containsmany things but for color...krill/paprika/spirulina)...and the ocean nutrition pellets I fed the as juvies....
Now as young adults/teenagers they also get freeze dried blackworms as you can see in the picture.
hth,
al