Mine are gray most of the time, occasionally getting their pattern back. Sometimes one of my males turns green on top. I believe colour is partly based on their background and partly on their mood. Mine are pretty tame - all feed from forceps and my female will sit on my hand and take food from the other. I don't heat mine and they just have a normal fluorescent bulb during the day time. None of mine hide - they spend their days sitting in the branches in plain sight.