Rated 4 out of 5 stars

As others have said, your extension conflicts with TabMix Plus. The close tab button disappears from all the tabs, which makes it a deal breaker for me. Great idea in theory, but please fix that annoying bug. Also, TMP seems to have an issue with wrapping the tabs to the next bar when there are too many and multi-row tabs is on. I don't know if there is anything u can do to fix that, but it would be cool if you could add multi-row tabs maybe. Multi-Row Bookmarks Toolbar is sorely needed as well. You could add some stuff and make your extension really shine! Keep up the great work!