I've followed the steps laid out in
http://www.getpersonas.com/en-US/demo_create
I've snagged several open source pics and pics that I'm sure YDL / Fixstars would not mind for anyone to use (according to their online documentation - not to use the logo for personal gain and / or to give credit where credit is due).
The instructions are quite easy and offer a more personalized browsing look to our new 3.6 build - Big THANK YOU TO PAUL.
I used gimp to create several new personas.
Have fun with it.
--roshi