http://blog.mozilla.org/addons/2012/03/01/personas-are-joining-the-themes-family/ http://blog.mozilla.org/addons/2012/03/01/personas-are-joini... The term chos

http://blog.mozilla.org/addons/2012/03/01/personas-are-joining-the-themes-family/ http://blog.mozilla.org/addons/2012/03/01/personas-are-joini... The term chosen was "background theme", since a background image is essentially all that they are. "Skin" was also under consideration.