Does their brain consciously drive the control of their cell pigment/color ability, or is it something more subconscious/reactive/instinctive? Seems like the brain has to be involved to coordinate...

I wonder what the closest thing like that would be for humans? Would it be akin to me thinking “i want to be more tan” and somehow my cells get the signal to be more tan?

Obviously we will likely never know, but there is some leap here I wish we understood better. (Or do we and I’m just unaware?)

Edit: thinking about it more... i don’t know what happens when i think to “make a fist” and yet it happens, so maybe it is something more at that level...