What is the font used by VB staff here for displaying usernames?
 

I like the font being used here by the staff, the italicized bold font, that sets their displayed usernames apart from the rest of us.

I like to use something similar to this for my forum, does anyone know how to do this? I'm using the legacy postbit user display.

My understanding is that the default style is used here, so this is something that can easily be done, right - it's not a custom add-on, or is it?
http://www.vbulletin.com/forum/member.php?u=656