Idea: add setting to enable compromise between sRGB and wide gamut

[tszynalski]

First of all, thank you for creating this very helpful utility.

It would be nice if I could tone down the colors on my display just a little bit. A full sRGB clamp, while technically accurate, produces fairly dull, desaturated colors (mostly reds). What if it were possible to choose a "% clamping" parameter that would enable the user to achieve a kind of compromise between sRGB and wide gamut -- i.e. a bit more vibrancy in reds and greens, but not so much as to cause red skin?

Alternatively, an option to fine-tune the EDID primaries could do the trick as well.