A nice syntax theme for Atom.
The control freak author suggest that Overpass Mono to be used as the editor font.
But seriously just use whatever font you like!
There is also an Atrium UI theme to go with this. And yes that UI theme uses Overpass as its default font.
A small ad: you can check out the background image on my Dribbble.
Good catch. Let us know what about this package looks wrong to you, and we'll investigate right away.