This theme is meant to provide a subtle interface for distraction free coding, with coloured accents (that can be configured). Popular/Useful packages get some attention too, and are adjusted visually to work with the theme!
You can change the accent colour in the theme's settings.
Some colours that work great:
Note: Accent colour changes won't take effect until you reload atom
[View] -> [Reload]
Feel free to submit issues, or request style changes/additions on github! Inspired by Brogrammer UI, which I've been a fond user of in Sublime and Atom.
Good catch. Let us know what about this package looks wrong to you, and we'll investigate right away.