Ember 7.x-2.0 is now available!
Ember is a responsive administration theme built for use with the Spark distribution. The 7.x-2.0 version has been re-built from the ground up using sass and compass. Ember is designed specifically with Spark users in mind, though it can be used as a standalone admin theme as well.
Ember theme was also built to work with Navbar module (Toolbar in Drupal 8) and includes module stle overrides for Views, Ctools, Panels, Media, Workbench and Features.
The Ember style guide can now be found on the Ember documentation page. Not all of the style guide has yet been implemented in the theme. Your help is welcome!