Blackbelttcon has released an update for his modification to the FullScreen Browser, originally made by TheNameless. This update, as Blackbelttcon puts it, "has specially made address bars with are under the folder adbg, so you have to move both the bg and the adbg that you want into the design folder."

As you can see from the above, the modification allows for the backgrounds to your FSB's address bar. Granted, it's not a large upgrade, but he does intend to include full customization in the next modification.

For now, you can check it out, and see how well it works for you. He's also put a tutorial for changing the skins, so if bulldogs aren't your style, you can check out the readme in the fsbrowser folder. Enjoy!