Description of the new feature/enhancement

Love the new feature to autodetect and use the desktop wallpaper, would it be possible to select what monitor to pull the wallpaper from and to detect when the wallpaper has changed and use the new one if only for new profiles launched after the change?

Proposed technical implementation details (optional)

User can select the monitor to use for the autodetect and the app uses that wallpaper until it changes either manually or automatically, then the app notices the change and either changes all backgrounds or at least backgrounds for any new profile launches