padding:          .5rem 1rem !important;
   color:            var(--light0) !important;
   background-color: var(--dark0) !important;
   border-color:     var(--neutral-orange) !important;
 }

I've been able to change some of the Tooltips in my Firefox, but there are still that I can't edit. I've not been successful on Thunderbird at all. Using this in my Firefox's `userCrome.css`: ` tooltip { padding: .5rem 1rem !important; color: var(--light0) !important; background-color: var(--dark0) !important; border-color: var(--neutral-orange) !important; } ` The "Show your Bookmark", "Open a new Tab", "Back/Forward", "Reload", all of my bookmark websites work. The "Home", "Open application Menu" and "Extensions" still show a black bg w/white text. Switching to a light theme shows the white bg w/black text, so it's a theme issue and not a Operating System (Win 10) thing. I can't seem to get any of my custom Tooltip colors to show up in Thunderbird. Any help would be appreciated!