Awesome work! Rated 5 out of 5 stars

FabTabs is a very cool add-on. For the instances where the tab matches a site's header colors/image exactly, it creates a seamless looking effect between the page and the tab which not only looks great, but it makes it clear and obvious exactly which tab is focused.
In other cases it still accurately grabs a color from the site and colors the tab. Or grabs a screen shot. I'm still learning how it works but I recommend FabTabs for sure.

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