The one thing I wonder about with the fire balls is that the super fire does seem to have a variable number of yellow splotches that pop up. I wonder if the yellow splotching on them would cancel the axanthic effect or clean it up? Adding fire might be the most interesting way to go, you could see if the fire mutation could clean up the dark background on the axanthics or maybe axanthic would work to clear up the yellow splotches on the super fires?

Mark