Rated 5 out of 5 stars

Works as advertised. One small nit... my bookmark toolbar doesn't have it's bottom border when in the about: screens you modify.http://img819.imageshack.us/img819/9201/capturehvl.png

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Problem is due to a Stylish theme I use http://userstyles.org/styles/60468/firefox-australis-mockup-theme I can probably fix it myself.

This review is for a previous version of the add-on (1.0.1-signed). 

What platform are you on? Do you have a custom theme?

I'm seeing the border on my Mac and Windows machines, but I'll check into it.