Inputs

Color 1
Color 2

Two inputs for colors from which you want to use red, green, blue and alpha portions to create a new color.

Red
Green
Blue
Alpha

These four menus define the resulting color that the Node will output. From the drop-down menu you can select an arbitrary combination of options for all three color components as well as for the Alpha channel. The selection possibilities reflect those of the Shuffle Node, only that here you can freely combine the components from two color inputs.