looking for a Mozilla theme

Hi!

I'm a new user to Mozilla, I just downloaded the version 1.6

Here is my question:
I was at the Film Market at the Cannes Film Festival a few weeks ago. 
They had a stand with free access to computers using Mozilla. I loved 
the theme that the browser used: instead of the traditional "M" at the 
top right of the screen (the little icon that animates when your browser 
is searching for something), it had a "Matrix Reloaded" kind of icon, 
with drops of "Matrix rain" falling when the browser is searching for a 
page.

Can anyone tell me which theme I have to download to get this cool icon?

Thx!