From my understanding there is no way to do this within EasySocial without hacking the template. You can create templates, but that's on an advanced side. You may be able to override it with your joomla site template. I haven't used this extension, but there's an extension called Custom CSS in the Joomla directory that a lot of people use, it may make it easier for you as well.

For Users - This won't change the font, but it does the others. I'm not sure if it's compatible with 1.3.4 yet, ask the developer

http://stackideas.com/apps/item/396-profile-designer

/style.min.css file - Using your FTP change fd.es font-family: "Lucida Grande" to font-family: "Your Font" ....not the easy way you wanted, but this is how you do it

Thanks for sharing this Josh By the way Fordiy, it seems like your account is not tied to any subscriptions on our site. Can you please let us know if there's an issue on our end?