Cameron Jones

Fluid Customizer is a simple plug-and-play plugin which allows you to resize the width of the preview window in the Customizer to whichever size you like. Simply install the plugin, go to your Customizer, then click and drag the right border of the sidebar and watch the magic happen!

Fluid Customizer

Preview your site for a variety of different devices by resizing your Customizer sidebar with a simple click and drag

Ryan Hellyer

Ole-Kenneth

Menubar Color Changer allows you to change the color of the black menubar in Twenty Eleven. It also adds the customizer to the appearance menu. 
The plugin is easy to use and quick to setup!

Menubar Color Changer

Menubar Color Changer allows you to change the color of the black menubar in Twenty Eleven.

Fluid Customizer vs Menubar Color Changer