SwiftUI -如何模糊视图的默认背景颜色？

import SwiftUI

struct ContentView: View {
    var body: some View {
        Text("Hello, World!")
            .font(.largeTitle)
            .padding()
            .background(Color.blue)
            .blur(radius: 10)
    }
}

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