Neopets Paint Brush Concept: Gem

I've been playing Neopets for decades now and I've always enjoyed the art style. One of my favorite features in the game is painting your Neopets. I've had a lot of ideas for paint brushes over the years, but this time I really wanted to flesh out something extra. So I went ahead and made a Gem Paint Brush. When you paint your pet with the gem paint brush they turn into walking embodiments of actual gems. Because there are so many Neopets to choose from I figured it would be cool to have a whole color spectrum of variants based on which Neopet you're painting. Example: Pteri-red, Kougra-orange, Lenny-yellow, Peophin-green, Poogle-blue, Arcara-purple, Cybunny-pink, and so on...