Timothy Bowers on "[Theme: Circumference Lite] Footer color"

Sure there is :)

You can use CSS like this:

#cir-footer-wrapper {background-color: #fff;}

And then a plugin like this:

http://wordpress.org/plugins/custom-css-manager-plugin/screenshots/

http://wordpress.org/plugins/my-custom-css/screenshots/

http://wordpress.org/plugins/pc-custom-css/

http://wordpress.org/plugins/imporved-simpler-css/screenshots/

One of those will let you add CSS without editing a CSS file or creating a child theme.

Have a fab weekend! :)