Quote Originally Posted by Bolisnide View Post
In my experience, this is not true... sorry.
My red-eye is always darker at night, when the lights are out. Even with high humidity and perfect temps. When lights come on first thing in the AM, my red-eye appears darker, like Lynn's Ruby.
Lynn is a very experienced frog owner, I would only be so lucky to come back as one of her frogs!

In another tree frog quote where this same question was posed, (http://www.frogforum.net/tree-frogs/...een-color.html) on the second response, Don said quote,

"They change color due to several things, from humidity, temperature, mood, and even to blend in. It is going to be very common for you to find him this color. They change color quickly and I can photograph one in full bright green and then minutes later find him dark brown.

How long have you had him?
What are the enclosures temps and humidity for both day and night time?".

I have also found that if the red-eyed tree frog is a dark color (more of a dark brown) it may mean that there is an environmental problem in the tank ie. Humidity, temp, ect.