As I asid I already know that, its copied from the wiki
Maybe I was not clear, what i did't understand was how to work with the red green and blue channels in photoshop. Think i figured it out
though, if i paint in a layer with color (255, 128, 128) that will affect the red channel only. And thats what i wanted to know (given that it works)

though, if i paint in a layer with color (255, 128, 128) that will affect the red channel only. And thats what i wanted to know (given that it works)
