Those are nice, they just keep getting more and more orange...

Will you please explain how cool you keep them in the winter? Are they treated like temperate climate Colubrids? I have some E. johnii from Warren and yourself, but I have been unsuccessful breeding them. I wonder if they need more cooling or if my male just does not have the stimulus he needs. They 1.3 are large and about 7 years old. Any advice on breeding them is much appreciated.
Gratefully, Vic