Brightness & Constrast & Saturation sliders

[King of Worms]

As the title says Id like to see those rather standard sliders ingame

Or a gamma slider instead of the brightness/contrast..
not really sure whats the real difference and which option provides better control over the resulting image.
Gamma slider is more standard approach in recent games

Saturation slider would be a nice bonus as someone might want it more desaturated and grimy, other person might preffer more vibrant settings etc.