Rated 5 out of 5 stars

There should be an option for tabs in titlebar in a restored window. See http://userstyles.org/styles/42417/ff4-tabs-in-titlebar-in-restored-window
Also in Toolbar>Buttons there should be an option to mix certain styles or create custom styles.

This review is for a previous version of the add-on (1.0). 

Rated 5 out of 5 stars

Please make a test version for the 4.2 nightlies.

This review is for a previous version of the add-on (1.0). 

Our currently development version works with 4.2, however it will not be supported by us in its current form. We hope to get it out very soon.