I use one of the ingredients in there with my dart frogs,
Naturose.
It works, but it works a lot better if you start at a young age and the colors
are developing along with the supplement.
Use a little bid at every single feeding for best results. It will eventually build
up the pigments. It's a gradual thing, so you may not notice it works so well,
so the best thing to do is take a few pics before and then compare a year later.
I've been using Repashy's crested gecko MRP on my chameleon. I looked at the ingredients of the stuff the vet gives you for reptiles and Repashy's MRP compared as a much better product. So I began using it with incredible results after only one month. The only thing I believe that I have noticed is that the mixture needs to be thinner, more watered down for amicable passing of fecals. Now my cham gets a mix of quail egg, MRP and liquid vits. He's beefy, more colorful and extrememly active.