DarkAdapted is an application program. It controls the amount of red, green, and blue in your screen gamma so that you may, for example, preserve your dark adaptation while using your computer. Gamma fades can be scheduled, AppleScripts may be scheduled, and system-wide hotkeys can be set up to execute AppleScripts and gamma fades.
* DarkAdapted should now work with a few additional displays, video cards, and drivers.
* Special menu has been renamed Options.
Tools and Utilities
Product page: here