OK. Not quite what I expected. LMAO

Here's what I did in Photoshop. I viewed the channels in an image. Filled each of the R, G and B channels with black, and then added white text to represent which channel layer the text was on. The large image shows the result when you view the image in RGB, but you'll see the text on each layer in the layers palette.

So then I applied the SimplePBR shaders to LaFemme (they use the physical surface node for SuperFly). Then I added the SeperateRGB cycles node. and piped this experimental image into it