Check out NvidiaInspector. Not sure if it has saturation adjustments though.
You might also be able to find that in the Nvidia Control Panel.
As I recall, RadeonPro offers saturation adjustments because it has a build of the SweetFX post processing dll incorporated into it. NVInspector, and for that matter, Radeon Pro are at their core really more about handling hardware features and systems.I didn't see anything for saturation in Inspector, though I guess I must have missed it.
So, I guess the answer to the OP is no?