This is an animated persona. Lightning bolts flash in the clouds and loops.
If your browser stopped animation, it is because you have version 18 or higher. Download https://addons.mozilla.org/en-US/firefox/addon/personas-shuffler/ (Personas shuffler) to restore this functionality.
Great but buggy
Whenever i restart Firefox the animation freezes and remains still, i have to disable and re-enable it to start working again. Is this a Firefox bug with animated themes in general?
Excelente me gusta mucho....
Rated 5 out of 5 stars by Rodolfo Gavidia on August 19, 2015
I love the animation! Great for the summer/spring/fall in our area
Rated 5 out of 5 stars by Shadowfly325 on May 4, 2015