DemoNavColor.swift

struct DemoNavColor: View {
    init() {
        UINavigationBar.appearance().tintColor = .gray
            UINavigationBar.appearance().shadowImage = UIImage()
            UINavigationBar.appearance().isTranslucent = false
    }
    
    var body: some View {
        NavigationView {
            Text("DemoNavColor")
            .navigationBarTitle(Text("DemoNavColor"))
        }
    }
}