Rated 5 out of 5 stars
This Theme (Version 0.6.1 as of 17 March 2010), along with its companion StrataBuddy version, shows me almost exactly what can be anticipated from Firefox 4.0a1-pre when it becomes available for testing.
I have also been using Personal Menu 4.2.1 (which has access to all current Menu Bar functions) to test variations on the included File/Tools menu this Theme for discussion at MozillaWiki. As I envision 4.0a1-pre, I anticipate an iconified Firefox menu button (Style 6 in StrataBuddy 0.6.1), Bookmarks button (identical in appearance and function to that included this Theme) and Save "disquette" button at the far left end of the Titlebar, which would display the title as encoded in the Head of the foreground tab page (plus the standard Minimize, Maximize/Size and Close buttons at the far right).
Thanks for keeping the Firefox community up to date on the evolving configuration of Firefox 4.0.