Universal Indicator is the group name for Rephlex Records artists, Richard D. James (Aphex Twin) (as Martin Tresidder) and Michael C. Cullen (Mike Dred, Kosmik Kommando).. The name is a reference to the signature acid techno sound found on all the releases. 5 projects were released, and a compilation CD was mixed by Mike Dred. All the albums are different colours used on the UI spectrum. They were released in the following order: Blue, Red, Yellow, Green.