I live in Pennsylvania. This is the only picture I have at the moment, I'll try to get more in the morning;

I'm pretty sure they're green frogs (they're common around here and the froglets have little ridges down their back, so not bull frogs).
I didn't notice any sign of disease like a fungus. If they had it my Grey Tree Frogs would probably have it too by this point, but they're fine.

As far as health, they're perfectly fine as tadpole. Then they morph and I put them in a separate tank, but they don't want to eat. The one who just died sat on land for a day hardly moving, which I figured was a bad sign, but I couldn't make him eat even by waving it in his face.

Is there something I'm doing wrong? Most times I've had tadpoles I just release them when they become frogs, but these ones will die due to their coloring if I do that.