They say a picture is worth 1000 words, so for you Witch users on macOS Catalina…
Yes, Dark Mode support is back for Witch in macOS Catalina. We’ll apologize for earlier blaming our non-functional Dark Mode on a bug in macOS Catalina; instead, it was an undocumented change in Catalina (inverted behavior) in how third party System Preferences panels indicate they support Dark Mode.
Note: You may have to reboot to see the changes take effect—it seems macOS caches something related to Dark Mode, and a reboot will clear that cache.
That’s really it for this update, so not much need to read release notes this time around.