For you Firefox users, there is a new theme that "Aero Glasses" Firefox for Vista users.
I found it works really well but there are a few caveats. The first is that it assumes you are using the default Aero skin/theme.
I'm using Windowblinds, and the Wraith skin happens to work really well with it, but you might want to use the WindowBlinds option to choose a custom skin just for Firefox and pick something that matches the default Aero closely.
WindowBlinds Configuration/Settings/Change the Look of an App/add per application setting, etc.
also, the second installation instruction can be confusing, so here is my take on it...
2) First, navigate to this directory
%AppData%/Mozilla/Firefox/Profiles/**YourFirefoxProfileName**/extensions/glasser@sixxgate.com/chrome/content
Note that you can find %AppData% by typing it in a command prompt, but for most users it will probably be a hidden directory in this location "C:\Users\**YourVistaProfileName**\AppData\Roaming\"
Note also that if you are the only user in your account, then **YourFirefoxProfileName" will only be one (and it is weirdly named) in the above directory.
ONCE YOU FIND the right directory, then you will find an old dwm-overlay.js file there and then you...
Rename your old dwm-overlay.js to dwm-overlay.js.backup to back it up.
Copy my modified dwm-overlay.js over to the folder.
Enjoy! 