Any of those folks that went to art school in Detroit between 1985 to 1991 can remember this assignment from Design Theory One (color theory). That's where you pick an image to paint, plot out all the colors in the scheme, and paint 4 more variations (translations) plus a negative (complimentary) version, and draw a 3 dimensional diagram of the color chart for each. And, yes, it was all done by hand in gouache. Sleepless nights & losing myself in the paintings, I'll never forget the process and, more importantly, the formula.
