Regarding auras. I am not sure, if I observed the same phenomenon, but if I sit still and keep my eyes fixed on the same spot for a while (in a still scene), my eyes will—after a while—get accustomed to the exact light pattern incoming and everythig kind-of fades to gray. But very slight movements will then generate colorful borders on edges (like a gaussian edge detector).
Regarding auras. I am not sure, if I observed the same phenomenon, but if I sit still and keep my eyes fixed on the same spot for a while (in a still scene), my eyes will—after a while—get accustomed to the exact light pattern incoming and everythig kind-of fades to gray. But very slight movements will then generate colorful borders on edges (like a gaussian edge detector).
Or you possibly can study hard Eckman and then train your synesthesia on people!