Specify CMYK percentages?

[dtodd]

I need to create some "generic" backgrounds to be used in other apps (InDesign, Illustrator) that can be specified to certain CMYK percentages.

In Photoshop, I create a file in RGB and using the default B&W, render clouds. Then I use various filters and create the backgrounds I want. I convert these backgrounds to CMYK.

What I need to do is make the (converted RGB) "black" backgrounds to be specific CMYK percentages.
I have tried to create an adjustment layer and then using selective color, but it's not accurate at all.

Any suggestions?

 

[JLBerry]

Maybe I don't understand your question, but why don't you just use: Image / Mode / CMYK Color?