Orange Storm now Mocha?

[Üter]

So these Clowns were Orange Storms when I got them. 6 months later look more like Mocha Storm. Is this common or something lacking in their diet that I haven’t been providing? I feed them Omega One Marine Flakes, New Life Spec Marine Pellets, Mysis Shrimp. Occasionally a variety of the other frozen ones but nobody is ever interested in them. Just the pellets and Mysis. Here are first pics and a current.

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[Sneak]

I read that they tend to darken as they grow. Thats why "black storm" clowns look more like mocha storms when they are babies, they darken up during the first year or two.