How can the color of the navigation bar title be changed in SwiftUI?

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To change the color of the navigation bar title in SwiftUI, you can use the navigationBarTitle modifier and set the foregroundColor to the desired color.

For example:

struct ContentView: View {
    var body: some View {
        NavigationView {
            Text("Hello, World!")
                .navigationBarTitle("My Title")
                .navigationBarTitleColor(.red) // Set the title color to red
        }
    }
}

extension View {
    func navigationBarTitleColor(_ color: Color) -> some View {
        return self.modifier(NavigationBarTitleColor(color: color))
    }
}

struct NavigationBarTitleColor: ViewModifier {
    var color: Color

    func body(content: Content) -> some View {
        content
            .foregroundColor(color)
    }
}

In this example, we've created an extension on View to add a custom modifier called navigationBarTitleColor that takes a Color parameter. This modifier simply applies the foregroundColor to the navigation bar title.

You can see this in action in the body of ContentView, where the navigationBarTitle is set to "My Title" and the navigationBarTitleColor is set to .red.