MacBook :: Screen Color Settings Change After Screen Saver?

so this has happened twice now in the past month, my mb is in screen saver mode and i wake it up to find that the color is off in the screen. meaning that the color settings changed and the screen has a swashed out blue tint to it. first time i restarted and all was good, second time i clicked on the preferences icon and then the screen went back to its normal setting. my normal setting is not the factory one but one of the ones that people said makes the screen look better.

so what gives, is the integrated chip dieing on me?

oh its a unibody that i got when they first came out, 2.0 processor one all factory