Thx for keeping it simple! Rated 5 out of 5 stars
Love the simplicity of this add-on and the fact that it doesn't have any complexity. It's really great just how it is and doesn't need any more features or anything like that.
However, I do think two "cosmetic" changes would improve the extension overall.
1) change the light blue background to a more "conservative" "unnoticeable" color. I use Ubuntu and the light-blue background is pretty jarring. But I also find it jarring on Windows 7 as well.
2) instead of using elipses (...) in the tab's title when short on space, use the "fade out" instead, like Google Chrome uses in its tabs. The Fade Out allows a few more letters to be seen. The elipses take up too much space.