An example of non-MW:O HDR Grain
here. There are probably MW:O-specific examples out there too.
The washed-out colors and the "fog of war" are a deliberate part of the environment on those maps. Ambient lighting is a huge factor in how colors show up. You won't be getting rid of that.
Turning off all of those options should help you see farther in the distance, and everything should be clearer. However, it also depends on the graphics quality you're running at as well -- some of this isn't enabled at lower levels.
And yes, I can definitely tell the difference with the options enabled versus disabled. I run at 2560x1440, full-screen, Very High preset.
Edited by Durant Carlyle, 29 April 2014 - 08:44 PM.