[Plugin: WordPress Form Manager] Basic CSS Formatting

..Just installed the plugin and everything seems to work fine. I’d like to make a few cosmetic changes to the form i.e. background color, font size, etc, but having trouble locating the css coding. The settings indicate I’m using the Form Manager Default template, but I don’t see anything in the style.css file. Any suggestions?

http://wordpress.org/extend/plugins/wordpress-form-manager/