6 01 2016
Elementary OS “Freya”: Inverting Screen Colors like on OSX (ctrl+alt+cmd+8)
in case you didn’t know, this blog entry is about elementary OS.
sudo apt-get install xcalib
you can either create a small .sh file and map it to your desired keyboard shortcut (ctrl+alt+cmd+8 for me)
xcalib -invert -alter
or directly type the commands into the settings for keyboard shortcuts: