I'm wondering if this plugin is still being worked on.
While I am able to use it and then deactivate it, it does interfere with the admin side which it doesn't show up on, but changes the dashboard layout to match the frontend. leaving a big empty space on the right side of the dashboard.
Also, if a search for a plugin is done while this plugin is activated, and you click on the details for a listed plugin, the popup is also reformatted and you cannot see the details because the right side of the information box is blank.
I had to edit the css for this plugin so that I could read the display, the dark background with the dark blue text is almost unreadable. While it may look cute, it isn't practical. So, a menu item in the dashboard to allow a different background color would be nice, otherwise, having to change the css for the plugin in order to be able to use it is kind of silly.
Otherwise, I really like what this plugin affords in time savings being able to edit css and watch the changes as I work out the way I want the frontend to look is a great addition to developing and editing layouts.