Hey Amy,
Customizing the look of your widgets is only possible in two main ways. First is by CSS, which does not require server access. The other method is with template overrides, which does generally require some server access.
We are not able to help with customizations ourselves. If you would like to customize your widgets, you need to write custom CSS on your site. To help do this I would definitely recommend checking out a [free!] tool like Firebug if you use FireFox, or the Developer Tools for either Safari or Chrome. They have “Inspector” tools that let you zoom right over the element on the page you want to change, so that it’s easier to figure out what CSS to write.
Please let me know if there are any other issues or questions I can try to help with!
Sincerely,
Gelrge