Title says it all really:
What does your browser look like and why?
The browser is a nightly Firefox trunk build ("Minefield")
The layout is simply done by Showing only the menu bar with small icons.
Elements from left to right: Navigation, Reload, Stop, Menu, Location, Search, Bookmarks, Fullscreen.
The design is the default theme with the "Elegance" persona applied.
The Persona icon in the bottom left corner is the only icon added by extension.
Window design is Windows7 Aero with black and about 50% opacity.
Close button on tabs is moved via browser.tabs.closeButtons:3
P.S. The window is usually quite a bit wider so that the location bar expands.
Installed addons: Adblock+, APNG Edit, Base64 Encoder, Chatzilla, DOM Inspector, Firebug (only enabled when I need it, as it's prone to create conflicts), FlashGot, Full Screen Video, Greasemonkey, LiveHttpHeaders, PasswordExporter, Personas