This wallpaper by Francesco Rugi and Silvia Quintanilla of Milan design collective Carnovsky is actually three patterns in one — a red, green and blue (RGB). The overlapping designs create a visual cacophony of color and pattern but individual patterns can be filtered out by colored light or colored filters.
Why it is a bit headache inducing — it is also really cool. For the full effect, see even more images at Yatzer | RGB Wallpapers by Carnovsky for Jannelli e Volpi.
Images: Luca Volpe