size of font for usernames under user pics?

[mars_daydream]

I'm new to the Expressive layout and I'm wondering if there's any way to change the font size of the usernames underneath the userpics on my Friends page. (I'm currently using the Hills Midnight Expressive layout with a modification to keep the text from wrapping around the userpic.)

Ideally I'd like the usernames to be bigger so I can scan my friendslist without squinting! Thanks.