Hey Reece, are you still using Omega?
What you're describing are the game profiles overriding your native/default display settings. What you need to do is to adjust your colour/brightness/gamma etc for each game and save that as a profile, which can be found in the taskbar Omega/ATI icon. Do the same for your default desktop.
Then after exiting a game it's only a matter of 2 clicks to get your levels back.
Omega/ATI profiles will store any/all calibration levels & AA/AF settings etc at the point of save regardless of game/application.
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