Option for Black theme to follow/respect System theme

[Username1-a]

Describe your suggested feature

As of now, choosing Black theme stays black even when System is switched to light theme. A welcome change would be for Black theme to properly behave like a dark theme variant and for it to change to light theme when System is set to light theme

Other details

The problem is kinda related to version 7.3 of the app being the last one which respects black monet theme set by the apps like Repainter or custom ROMs monet settings. So, in version 7.3 you can have light and black theme properly changing with System theme.
In version 8.0 (probably due to updated material components) you're stuck with dark grey theme when choosing System theme in the app.

Acknowledgements

• I have searched the existing issues and this is a new ticket, NOT a duplicate or related to another open issue.
• I have written a short but informative title.
• I will fill out all of the requested information in this form.