Adjustment Layer and Green Screen Footage

Hi, 

I have different clips laid out in the sequence, and they're all green screen so will need to be keyed out and have a virtual background placed underneath them. I want to color correct and grade the footage; however, is there a way to do that with adjustment layers without the virtual background being affected as well? If I place an adjustment layer above all the clips, it would also change the color of the background that's underneath the clip layer. Is nesting a viable option here? Or is there a better way? Thanks!