It was that wat i was looking for, but unfortunalety i can't see it...grey on grey won't work. On a dark Skin it disappears. Can you consider to make a version with diferent colors? white icon on dark grey ...or is there an option that i can do this by myself?
i simply use FF Dark Mode, what looks quite good. but: after restart of FF 65 B11 it appeared white...before it was greyish und unvisible...will rate you 5 stars. only i don't understand this :-)))
Which theme are you using. "Undo Close tab" supports a wide variety of themes, but some (mostly old and unmaintained) themes don't work with the new APIs. Would be nice to know which theme you use. To solve your problem: Try a different theme (can even be a dark one).
