My guess is it makes no difference in fact I suspect a white light would be adapted as well. (not suggesting that however) what I have found is that the lights I have heat the surrounding area so although there is a difference in ceiling and light it isn't as much as ceiling walls hard to say if there is a single large light area or if everything kinda glows. I wish we could experience what they do. Can they separate heat pit info from eye info or are they over laid? I wish there were an answer sadly biology can only answer some of the questions.