I recommend and use red light.
But if you think about it, what matters is how much rod vision you have left after exposure to whatever light you are using. The photosensitivity curves of the different normal human photoreceptors are well known. So there is an equivalent amount of green or blue or white (which is a mixture) light which will yield the same amount of bleaching of the rods as a red light. It will be dimmer of course.
