如何在swiftui中动态改变文本背景颜色？

import SwiftUI

struct ContentView: View {
    @State private var backgroundColor = Color.white
    
    var body: some View {
        Text("Hello, World!")
            .padding()
            .background(backgroundColor)
            .onTapGesture {
                self.backgroundColor = self.randomColor()
            }
    }
    
    func randomColor() -> Color {
        let red = Double.random(in: 0...1)
        let green = Double.random(in: 0...1)
        let blue = Double.random(in: 0...1)
        return Color(red: red, green: green, blue: blue)
    }
}

struct ContentView_Previews: PreviewProvider {
    static var previews: some View {
        ContentView()
    }
}