poohpt, EmperorDarius: Did either of you ever find a way to do this?
Obviously it's cosmetically possible, as poohpt has a screenshot of the Finder menu bar before it fully loads. I would assume one could edit the image file that contains the menu bar background & drop shadow, but after searching in ever way I can imagine, no forum, modder, or other app has a way to remove the background but not the text.
I just think this would look awesome, and it's probably not too too difficult.