Developer reply by Jarek Bialkowski
Rated 5 out of 5 stars
!!! 2019: Still very good design and perfect! But sometimes the theme deactivates on its own. You then have to put back from the Thunderbird Standard Theme to this one!?! (Thunderbird ver. 60.5.0)
Hi, thank you for your review. Unfortunately I can't do anything with your issue. It seems that sometimes (not always) thunderbird during update switches back to default theme even if you see that "MS Office 2003 JB Edition" is enabled. I'm not able to react on such behavoiur at all. Looks like some internal thunderbird issue.
To create your own collections, you must have a Mozilla Add-ons account.