Boo Mozilla. Yah jooliaan Rated 4 out of 5 stars

The only thing I don't like is the extra space reserved for the padlock. I think we can do without the space and the padlock and just use the color change for https sites. Also, it doesn't work with link rel="icon" href="data:image/png type favicons. Example:

Site Favicon in Urlbar

If you do not like the padlock, please, give this one a try.
Hope this help.