Hi FF, I recently acquired four fire belly toad froglets and have them in a medium sized critter keeper, I've fed them Drosophila Hydei for one and a half months and they have doubled in size! But the bellies are an ugly yellow color and was wondering if there are certain foods i can feed for more intense colors on the belly, i already dust my flies with Exo terra calcium powder and multivitamins, i've even heard from Devin Edmond's book, Frogs and toads that you can use color enhancer for canaries but I'm not too sure how safe that is.