Here’s a quick look and how to enable an early version of OS X Yosemite’s new dark mode | 9to5Mac: "Although the dark mode for OS X Yosemite that Apple previewed onstage at WWDC two weeks ago hasn’t officially made it into any build of Yosemite as of today, developer Hamza Sood has figured out a Terminal command which will let you get a taste of OS X’s dark mode"Dark mode. Sounds like an episode of Dr. Who.