Aris-t2
No CMB for Thunderbird 68+! Use CustomCSSforTb repository instead!
CMB will not be updated for Thunderbird 68+, please don't ask for it. I'm done with Mozilla and their lies about keeping the "old" add-on eco system in Thunderbird. This add-on will not be rewritten by me again!
---> https://github.com/Aris-t2/CustomCSSforTb
This is annoying, I knew they would do this. Guess I'll have to stick with old versions.
Most of CMBs CSS code still works in Thunderbird 68+.
I ported it to another repository: https://github.com/Aris-t2/CustomCSSforTb
Would there be any utility in a TB 68+ addon that was basically the UserCSS section of CMB that added USER CSS to the Prefs.JS file and the changes to the UserCSS had immediate effect without rebooting? Would such an addon allow some UserCSS things to work in 68+ that might not work from UserChrome CSS???
Something like that does not exist. Follow the instructions on CustomCSSforTb page to setup most stuff CMB offered.
Your work on CustomCSSforTB will certainly make it easier to ultimately switch to TB 68. I've got to wait for there to be stable replacements for a few other of my addons. I'm sticking with TB 60.9 for now.