The priests was exactly the same, as others that I could see at the time.
I doubt that it is the aura, more likely the etheric body which starts within the 3rd dimensional body. I state this simply because it is always a white light with the blue line (best I can describe it) as an outer type edge (?). Auras tend to change in colour or mix colours depending upon the state of the person at the time.
Though I have just remembered a time when one of my clients was in extreme pain, and his etheric image shot out from his head like a lightening bolt with a different colour running thru it (but I don't remember what that was). Interesting though, the image was more solid in colour, rather than the gossamer, wavering, ripple effect.