This is one of over 4599 effects generated by Filter Forge, a Photoshop plugin that allows you to create your own filters.
To open this filter, you must have Filter Forge 2.0 or higher installed on your computer. If you don't have it installed yet, click here to download Filter Forge
By subtracting Red,Green, and Blue from the original image, you can get their opposites: Cyan, Magenta, and Yellow respectively. K (black) is simply the overall brightness. In other words, reflection is the opposite of absoption. The CMYK system is sometimes used when pigments are layered together, as by your ink printer.
CMYK, extract, color, pigment, ink, printer, color, balance, cyan, magenta, yellow