Riso
three inks, one picture. only where they agree.
a risograph print pulled off-register: drag each ink plate back until the picture agrees with itself
A risograph prints one colour per pass, and each pass lands a little off the last. Slide each ink until its corner mark sits on the blue one, and the drawing becomes one drawing. Its greens and oranges were never inks: they are two inks agreeing.
Concepts: color, pattern.
An interactive you play with one thumb, on Wundr.