A bug attracted by light sits on a mushroom of a Bracket Fungus (Polypores). Bracket Fungus are active releasers of spores. This specific group was releasing spores in a very high quantity. It is often neglected that when the spores are lit up with an intense light from a certain direction, they look colorful due to refraction of light. This image looks like the bug is in some other world, some kind of wonderland of sorts !