The challenge was

Forget RGB. CMYK is where it's at.

You can't beat the classics.

Classic rock, classic style, classic cheese & pepperoni pizza, the list goes on. And when it comes to art, it doesn't get much more classic than the CMYK color model, (Cyan, Magenta, Yellow, and Black). That's why we challenge you to forget the full ROY G BIV lineup and design a piece of art inspired by the CMYK color scheme. Experiment with a 4-color pattern, create a play on the tester sheet that comes out of printers featuring CMYK when you change the ink, perhaps create an all-over print that looks like you super-zoomed into a printed image which, of course, is made up of little dots of CMYK.

Forget RGB; CMYK is where it's at. These basic colors are anything but - now go see what you can create!