03-23-2017, 01:51 PM
I always use dark themes whenever and wherever I can. I have tried several dark themes for Thunderbird and now use Just plain grey by sgudis http://addons.mozilla.org/en-US/thunderb...lain-grey/ and in Thunderbird Preferences, Calendar. General: check "Optimize colors for accessibility" for a nice dark calendar.
Left Mac OS X for Linux in Jan 2014

