Our member, AshUK, has reported yesterday that the latest Firefox nightly build contains a slight updated graphics. This isn't anything major but it sure does make the default theme look better. On a side note, Firefox's developer, Ben Goodger, has been discussing in his blog a question that some PC users like myself has been pondering about - Why do most Mac applications have such a great graphic resources? Check out Ben's blog at the link below.
Screenshot: 1, 2 (Screenshots have been provided at courtesy of AshUK)
View: Ben's Blog