To explain for the non-print nerds; CMYK are the process colours used in print (Cyan, Magenta, Yellow, Black)... K = black because it is the Key colour.
This illistration is called Paisley is Key, thus CMYP. The crosshairs are examples of Registration that is used in printing. You may have seen these in a newspaper, it's how they line up the colours for tracking; paisly would of course be absurd, hense the joke.