My B. orientalis changes colour - why?

[MiaF]

When I bought them, there was 3 lime-green and 1 bluish/greenish/brownish. Now they are mostly dark brown, except from now and then - very seldom. I have read this i common but not WHY? It makes me both curious and worried (don´t they feel ok?). Somebody know?

 

[stanleyc]

C orientalist can change their color a bit but what you’re describing sounds a little extreme for orientalist. Can you post a couple pictures of them? They sound more like C. cyanurus.

 

[stanleyc]

Oh I’m sorry I thought you were talking about cynops orientalis, disregard what I said

 

[MiaF]

This is how they looked when they came. The one on the stone is slightly blue-ish on his/her back (very seldom, mostly brownish dark green).