Windows 7: Calibrate Color

You can change the color calibration in Windows 7. It's also in the control panels...

This enables you to improve the colors on your display by making sure that they appear accurately. The specific color settings that you can adjust are dependent on your display and its capabilities.

Here you are able to adjust the Gamma, which is the mathematical relationship between the green, red, and blue color values sent to the display, and the amount of light that is emitted by it.

You are also able to adjust the brightness and contrast as well as the color balance of the display from this application.