https://blog.mozilla.org/addons/2012/03/01/personas-are-joining-the-themes-family/ https://blog.mozilla.org/addons/2012/03/01/personas-are-join... Personas are

https://blog.mozilla.org/addons/2012/03/01/personas-are-joining-the-themes-family/ https://blog.mozilla.org/addons/2012/03/01/personas-are-join... Personas are now just called Themes (background themes, specifically).