Green tree frogs can change color to a light brown, They will use it to blend into their environment. That being said they will also change color because of temps and stress. From your description his environmental requirements are being met and unless you have him in a sparsely planted tank, I would think he is fine. I would just observe for now.
Dan
Ps The Cubans wouldn't have any green, they will be brown to a pasty white color.
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1.1.4 D. Azureus
1.1.1 D. Leucomelas
1.3.5 D. Imitator
0.1.0 D. Cit Tinctorius
0.1.0 Cat
2.0.0 Kids
Last edited by RecycledAgain; 03-24-2010 at 02:47 PM..
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