Enforce dark theme for apps in Android 10
Function “Force enable dark theme” or “Override force-dark” is new in Android 10. The new option forces override of apps without dark theme.
Activation instructions:
1. Activate the dark theme.
Settings -> Display -> Theme -> Dark.
2. Activate the developer menu.
Settings -> About phone -> Build number.
3. Start clicking on this item repeatedly until you see the message “You have become a developer!”.
four. Open developer options.
Settings -> System -> Advanced -> Developer options.
5. Scroll down and activate “Override force-dark” or “Override force-dark” when the system is in English.
Note: Location of settings and translation may differ depending on the firmware .