Great extension and idea.
Unfortunately, last update broke it for me and deleted all site lists (i.e. customisations), hence why not five stars. I'm not going to spend hours after every update just to recreate a experience which then just becomes lost.

Super simple and works very well. Genius idea and excellently executed.

No Idea what you asking for?

Very good add! works perfectly

If only Windows 11 could syncronise too! Honestly this is brilliant.

EXTREMAMENTR PERFEITA NADA É MELHOR QUE ISSOOOO

非常好用且美观的插件，要是手机版的firefox也能兼容就好了！！！！

It's a neat trick to perform, but it's a terrible idea. I was under the impression it would change each tab to it's respective web page background, so I could quickly spot which tab to switch to. Instead of changing the entire theme of Firefox, just change individual tab colors. That would be a great idea. I'm coming back to update my rating as soon as that update takes place.