Activate dark mode with a keyboard command
(Originally posted on 2014-12-19)
Dark mode in Yosemite/El Capitan can be applied by opening up System Preferences>General and checking a box. But you can also use a keyboard command if you do the following:
In terminal, input this
sudo defaults write /Library/Preferences/.GlobalPreferences.plist _HIEnableThemeSwitchHotKey -bool true
This is a sudo command, so it will ask for your password. Be careful that you type it out carefully. Logout and log back in.
You can now toggle Dark mode on/off by typing ⌘⌥⌃T.
macosxguru at the gmail thingie