Yes Rated 5 out of 5 stars

Nice! It works without problems in Firefox 12.0 and above, I am convinced. But the list-all-tabs button is not clearly visible in all the wallpapers of Personas. Just maybe the button should be multi-colored or otherwise be more prominent. All-in-all, five stars.

This review is for a previous version of the add-on (0.1.1-signed.1-signed). 

Sorry, but this addon is not meant for styling the list all button. It just makes the button visible.