The background color of Sorter - Take Note seems to be stuck on black in Catalina. Mojave is working fine, no matter which… Light, Dark, or Auto pref is chosen in General system prefs.
Maybe this is some kind of west coast political statement? Interesting. LOL
From 3.7 Release Notes…
“The background color of the Take Note view of the Sorter was sometimes incorrect when switching between light and dark modes. Fixed.”