Developer reply by steva
Rated 5 out of 5 stars
Definitely the best theme I've used. I find that after using this theme, it is very hard to go back to stock TBird appearance. I hadn't realized just how dependent I had become on DeepDark until I stupidly allowed TBird to update itself to 16.0.1, and it was removed! I'm going to back-level TBird until an update for this theme comes out...that's how nice it is!
This review is for a previous version of the add-on (2.5.1).Thanks for your very nice review. Check this link > https://addons.mozilla.org/en-us/thunderbird/addon/tt-deepdark/versions/ there is something that may interest you ;)
To create your own collections, you must have a Mozilla Add-ons account.