Facebook expands Dark Mode testing on iOS and iPadOS apps | AppleInsider
Facebook is accelerating its roll out of the social network app's Dark Mode," with more users able to turn the app dark to match the rest of their iPhone apps following an extended testing period.
1 Nov 2020 ... If available to use in the app by a user, an option will appear under the Settings & Privacy menu. Options will allow the app to be permanently light ...