Rated 5 out of 5 stars

It works very well. I tried it in combination with a few different themes and it worked without problems. Just what I was looking for to make my screen less cluttered. Only drawback was that greyed out icons are now always grey (like my LastPass icon, it looks like I'm always signed out now :-) ) So an option from preventng the Tab Bar from being affected (or, the option to affect only favicons) would be a nice touch. Thanks for the add on!

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