Coloured Gas

A sapient species of luminous Coloured Gases inhabit an extraterrestrial realm in which matter, form and gravitation don't exist. This realm is identified as being outside what Humans call "infinity", and is either contained within or accessible from the Dreamlands.

Biology
One individual of this species, named S'ngac, consists of a violet-coloured gas. It's not known what other colours they can be.

Culture and society
The Coloured Gases are a scholarly species known for studying the secrets of the universe, including those of the Outer Gods. They are willing to help Humans, and seem to be allies of the Elder God Nodens.

Appearances

 * "Celephaïs", by H. P. Lovecraft (1922)
 * The Dream-Quest of Unknown Kadath, by H. P. Lovecraft (1943)
 * "Shaggai", by Lin Carter (1971)