Separate Color Node
The Separate Color Node splits an image into its composite color channels. The node can output multiple Color Models depending on the Mode property.
Standard color input.
The color model to output.
Split the input colors into it’s three outputs: Red, Green, and Blue color channels.
Split the input colors into it’s three outputs: Hue, Saturation, and Value color channels.
Split the input colors into it’s three outputs: Hue, Saturation, and Lightness color channels.
The outputs of this node depends on the Mode property (see above).
The color channel that that is responsible for the image’s transparency.