I didn't see anything for saturation in Inspector, though I guess I must have missed it.
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.
SweetFX can be added to any DX 9 or possibly 10 game, by decompressing the archive into the main executable folder. There is a settings .txt file that can then be altered to adjust not only saturation, but allow for SMAA, FXAA, and a whole host of other visual tweaking. You can find the archive on the Skyrim Nexus site, and I believe that there is a configuration utility that would allow for a graphical interface to change settings. Both should be google-able.
Hope that helps