I thought I had written about this trick on my blog before, but couldn’t find it. So I try again: How to invert the screen (systemwide) in OSX: ctrl-alt-cmd-8 This makes it possible to change between regular and inverted view. I find it particularly useful when sitting in a dark environment, since it makes the screen much less bright to look at. Screenshots below: {width=“524” height=“424”} {width=“524” height=“424”}