The 4:30 AM night class had a second session, on auras. I must say, auras are best viewed against a midnight blue background. 

An aura is not just comprised of "one color." If you look very closely, it has rainbow-colored particles, like prismatic refractions on a cold, icy milk sherbet. 

Consider having a blank wall in your bedroom painted midnight blue. where you can stand against it with a full-length mirror in front of you.