How to change app tint color (New SwiftUI life cycle app)?

What is the best way to change app tint color in a SwiftUI app?

It is powered by the new SwiftUI lifecycle so I do not have the option to perform self.?tintColor

Tried searching here but didn't find any way to do it in a SwiftUI lifecycle app.

In the SceneDelegate.swift where you create the window for your app you can set the tint color globally using the tintColor property of UIWindow

let contentView = ContentView()

if let windowScene = scene as? UIWindowScene {
    let window = UIWindow(windowScene: windowScene)
    window.rootViewController = UIHostingController(rootView: contentView)
    self.window = window

    self.window?.tintColor = UIColor.red // Or any other color you want
    window.makeKeyAndVisible()
}

Edit
After seeing that you want it for the new SwiftUI, you can create new EnvironmentKeys:

private struct TintKey: EnvironmentKey {
    static let defaultValue: Color = Color.blue
}

extension EnvironmentValues {
    var tintColor: Color {
        get { self[TintKey.self] }
        set { self[TintKey.self] = newValue }
    }
}
   
@main
struct YourApp: App {
    var body: some Scene {
        WindowGroup {
            ContentView().environment(\.tintColor, Color.red)
        }
    }
}

Then in your views you would use it like this:

struct ContentView: View {
    @Environment(\.tintColor) var tintColor
    
    var body: some View {
        VStack {
            Text("Hello, world!")
                .padding()
            Button(action: {}, label: {
                Text("Button")
            })
        }.accentColor(tintColor)       
    }
}