A little known ‘feature’ of Apple’s Universal Access is the ability to switch to ‘black on white’ with this keystroke command. Basically it switches everything viewable on the screen to something like a photo negative. Pretty neat.
I like to use it as a night-time mode when there isn’t much light around because it makes it easier to read what’s on the screen without the blinding back light frying your retinas.
I was reminded of this feature via 43 Folders who reports of a Blacktree app called Nocturne that gives you the ability to tweak the settings of this feature. Pretty cool stuff if you use this often.
You might have heard of Blacktree as they’re the people that brought Mac users the ‘hands-down-most-useful-awesome-wonderful-best-coolest-app-EVAR-for-the-Mac’, Quicksilver.

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