Originally Posted by
UncleChester
Here's Waldo, Gray Treefrog. Most of the winter he's the light gray (2nd pic), sometimes with a light green lip and edge around his side (as in the 4th pic).
This summer he's been the light green (1st pic), it's a few degrees warmer in the summer and he's trying to impress the ladies.
When he's wet after I mist the cage, he turns a darker version of whatever shade he's currently in (3rd pic, taken in the winter). He is also wet here, but he's definitely darker.
The green patches under the eyes never have a noticeable change. I've noticed the turning darker when wet or in high humidity is a pretty standard response in the 'wild' grays around here as well.