Rated 5 out of 5 stars
Simple, easy on the eyes, well-integrated, well laid out.
...and I don't know what the designer did to the 'Back/Forward' buttons to have the drop down menu only on the 'Forward' button on FF3 on the Mac but this has been the ONLY theme I've encountered that executes this flawlessly so that it works on the Mac build of FF3—THANK YOU.
BTW, albeit it's noted to not work with the nightly builds I'd been using Minefield (Firefox Nightly) builds and this worked flawlessly with that as well... I only went back to the Release of FF3.0 because Mozilla's Java execution as of the 3.1a1 builds seems to be nil or I just CAN'T figure it out...