Anger Sees Red (2004) dir. Kenneth Anger

Starring the color red, we see a chap in a blue shirt blue baseball cap walking down a pink street (thanks to camera filters). Discarding the shirt he takes a nap in the sun, but soon sits up introduces himself as Red. His missing blue shirt reappears he goes for a walk looking at stop signs, because theyre red, walks past walls painted red, arriving home to look out the window with binoculars, presumedly at something red.