Rated 5 out of 5 stars
I have used this addon for more years than I can remember. This gives Thunderbird a professional look feel that is not available elsewhere. I am doing beta with version 66 and I've read information that indicates full themes may not be allowed after version 61. True? Will the version for release 60 be the end? I do hope not.This user has 2 previous reviews of this add-on.
unfortunately it seems to be true :(.
However I'm very determined to bring my theme in v66. I hope there will be some possibility like in firefox case - full theme through userChrome.css file.