You See Shimmers of Blue and Purple
Guardian angels emit a beautiful pure-white radiance that some people see with their physical eyes. These “angel lights” look like sparkling shimmers or flashes of brightness (similar to a camera’s flashbulb).
The archangels, who are larger and more powerful than guardian angels, have colored lights that correspond to each one’s specific purpose. Archangel Michael’s aura color is a royal purple that’s so bright, it looks like cobalt blue. He also radiates a golden light that makes him appear tanned and blond.