Fire up your Terminal and type
apm install dankneon-ui
Or, inside Atom's Settings page select Install and search for dankneon-ui Theme.
Are you enjoying the Dankneon theme? Let us know, also don't hesitate letting us know if you run into bugs or if you have ideas to make it better. 😉
Good catch. Let us know what about this package looks wrong to you, and we'll investigate right away.