Good morning. I just recently became interested in themes and would like to create a traditional marriage theme for Thunderbird. However, I have no idea where to start to create such a theme. Does anyone have any advice or starting point? Thanks.
Nice! That seems rather straight forward and simple. Thanks!
How can i create animated Firefox-Themes?
Regards
I think you can use animated PNG’s
i try to upload an animated png but no animations available 
but some themes are animated… (f.e.: https://addons.mozilla.org/de/firefox/addon/animated-cat-it-moves/?src=ss)
Hmmm, I’m quite sure that an apng should work. The only formats that you can upload are png and jpg anyway.
I just tried with the Persona Plus addon, and that works.
Did you make sure to have your file not exceed the file size limit?
And take a look if it works with through this addon:
https://addons.mozilla.org/en-US/firefox/addon/personas-plus/?src=ss
You can use it to set a theme without uploading it to AMO.
Firefox doesn’t fully support animated themes anymore. The theme image is cropped for performance reasons, which breaks animated themes after the first restart.
@jorgev i know it, but nevertheless i would appreciate an answer.
@MartijnJ , i finalized my apng with “APNG Anime Maker” (Great Tool) and has not reached 300KB.
Message: "Animated Pictures are not allowed"
But Thanks, Personas Plus can animate this … also in the original size of 546KB as .gif … but a pity I cannot divide it with others -.-
.gif File: http://fs2.directupload.net/images/150812/f5jvmpqv.gif
.png Animated File: http://fs2.directupload.net/images/150812/dhgtoo6j.png (not reduced on 300 KB)
If your question is “how”, then the answer is any tool that generates animated gifs.