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.