Hey Steve,
Argent makes a powdered product called "Cyclop-eeze" that has a very high density of carotenoids. It's what I use in an attempt to bring out the "reds." I'm sure there are many places to order it, but here's one source (
Cyclop-eeze). Just in passing, I noticed some "color enhancing products" at Pet Zoo the other day, but I didn't even stop to read the labels. Therefore, I don't know if they're gimicks or the real thing. I'll take a better look and get a name brand next time I'm there. Cheers,
Rick