I too abandoned Atom after a few month trial period. It has potential, but it just had so many issues that, upon opening Sublime Text again, I heaved a huge sigh of relief. That's not to say Atom is bad, but even now it's a bit rough around the edges.

I love the theme though. It's probably the only time I've opened an editor and didn't immediately look to change the theme. If I'm not mistaken, it's called "One Dark" but I could never find a good Sublime or Emacs clone.