I had read somewhere that demonic energy is blue energy. I think it was VK Jehennums site…
Anyway - i found this article here
It shows how fire is blue in space due to zero gravity. It kind of makes sense then that demonic energy is blue, in effect because the demons/angels were born from fire, and not clay like man. They also are not effected by gravity which would explain the blue energy color.
Just an observation. What do you all think?