Thanks!

Yes, that the aura is apparently receptive to light is very telling. Of course, it's possible that clairvoyants who see the aura expanding in sunlight might be slightly off. It could be that the aura isn't responding to visible light (sunlight), but to photons at other non-visible frequencies -- and it just seems like the aura is responding to sunlight because, while standing in sunlight, you're also exposed to other, non-visible light.

This also brings up, for me, the question of whether the physical eyes can detect auras. Perhaps they can, but they simply aren't optimally "designed" for it in an evolutionary sense. If our eyes can still see in ultralow light, why wouldn't they be able to detect the low glow of a "biophotonic" field?

Or, is it, a matter of "building a resonance" between your physical eyes and the eyes of the energy field?