I was working on trying to make a gnome panel to look like the current W7 panel but got sidetracked and created this one of my own instead.
I'm pretty happy with it but also happy for anyone who wants to make it better (or worse - if you're into that!) or for anyone to give me feedback and I'll see what else I can come up with.
Works best on a dark desktop background.
Sizes provided (all 1600 width)
Also each size comes in a top version and bottom version depending on where you have your panels.
Screenshot is of 42px bottom panel version.