EDIT: Thanks everyone, the frog has been identified.
My boyfriend found this frog in his backyard. I'm pretty sure he is a tree frog, but I'm not certain.
Here is what he looks like today:
Here is what he looked like the day he was found:
He was so bright green and he thought it was a tropical tree frog and brought it in.
Here is what he looked like the day after he was found:
Here are some more pictures of him taken in the last 24 hours.
I'm pretty fanatical about the care of animals in my home, and it would be easier to make sure he's getting the best care if I knew what kind of frog he is. I can get better pictures if needed, but he's very nocturnal and it's hard to get him in decent light. He hides during the day.