Hi Michael,
Another thing to consider are the lights at the
LFS are probably really different from the light you have on your tank. So different colors might be more obvious under certain lighting conditions.
And about food, I'd also consider feeding nori, as a suppliment, to the clowns. It's algae (make sure the only ingredient is nori... some packages add salt, presevatives, etc.), there are different kinds algae nori to choose from, and I think its better than feeding land based plant foods to your fish as ocean based aglae are probably more digestable and therefore more nutritious. But see'n as clowns are omniverous, a varied diet, as you're doing, is great.
And lets see some pics!
