This can be done by adding an macOS plugin which has access to the whole AppKit API.  Then you can set the desired appearance there at runtime, for example: NSApplication.shared.appearance = NSAppearance(named: .darkAqua) For more information please see this StackOverflow question: How to set dark mode for NSToolbar in macOS Catalyst app?

I have exactly the same problem - although all information in the .plist file and the localized InfoPlist.strings files is there, my app gets rejected and I don't know how to reproduce the issue. Does anybody knows a solution for this?

I have the same problem - what is service name for resetting the location permissions in macOS 11.1? Is there a list with all the available service names?