Cliff, I'm putting you in the spotlight! (However, I'd love to hear other's thoughts
).
I've noticed that my BRB goes through *drastic* color changes; I don't have any pictures, but I will try to get some within the next few days. When I say drastic, I DO NOT mean after a shed, I mean DAILY. That's right, daily, as in bi-diurnal color changing.
Everyone may think I'm crazy, but after 16+ years of keeping, I've never seen anything like it; I have enough (self-proclaimed) experience to know that it is not the lighting deceiving my eyes. During the day when she is dormant/hiding, her lateral background (i.e., where the "bullseyes/crescents" are located) is a deep brown/grey. Her dorsal background is a nice bronze/orange at this time as well.
However, when she is active during the night, her lateral background becomes a vibrant WHITE. I believe the correct term may be that she has extreme "white walls" during the night. (There is approximately 2 mm on either side of the dorsal circles--the rest is white down to her belly.) During this time, her dorsal background becomes a more vibrant, deep red-orange, while the orange within her dorsal circles appears as a BRIGHT ORANGE.
My only guess would be an adaptive hunting change, but I've never heard of this. A bi-diurnal color transformation? In a snake? If you've read this through, I'm guessing you think I'm crazy as I do not have photo documentation, but I will strive to attain the evidence and post it. She is so bizarre and I would love some answers/theories.
Thanks in advance!