In the CMYK set, each card from Ace to 10 is a semi-tone of cyan, magenta, yellow, or black, each 10% deeper than the last card in the set. This effectively means that you can color code the ...

CMYK support. I don't know what that means but I like it. Web and video use RGB (Red, Green, Blue) color standards while print uses CYMK (Cyan, Magenta, Yellow, and blacK).