Vibrance UI
Atom UI theme with vibrancy support. Vibrancy it's kinda buggy and only available on macOS. You can use a background image to imitate the effect on unsupported platforms (Windows and GNU/Linux).
Based on Simurai's starter template.
Install
Fire up a Terminal and type:
apm install vibrance-ui
Or… within Atom's settings. After that, you'll be able to pick the theme from Atom's settings.