Yeah, the Joaz have such amazing contrast! I swear they glow in the dark!

We have one brown and one green Joaz and they both have that neon green stripe. I just can't get enough of it! Your Apple is the only one I've seen that looks like mine. I think they might be from the same spawning; I'm pretty sure we got them the same week and everything. Mine is currently on antibiotics for a UTI, but he is doing well. His appetitite hasn't decreased at all and there are no other signs of problems. So here is to hoping that both our Apples live long healthy lives! (And all the other frogs as well!)
I have definitely noticed that mine grow better when nightcrawlers are their staple diet. They are all around a better food source!