It does what it claims. Very good!

A must have extension for animated themes since animated themes had been abandoned by Mozilla from Firefox 18.
Animated themes wouldn't animate without this kind of extension.

To edit values of lightweightThemes.persisted.footerURL and lightweightThemes.persisted.headerURL in about:config doesn't help you, because Mozilla Firefox would automatically change them to default values some time.

After all, you guys need this extension.

Always liked this app; it kept things fresh and made themes more interesting for me. I don't like having to decide on a specific background for my computer so i have it on a library cycle. I thought this was perfect for my web browser as it does the same thing for me.