如何在swiftui的活动中改变图片风格？

import SwiftUI

struct ContentView: View {
    @State private var isHighlighted = false
    
    var body: some View {
        VStack {
            Image("exampleImage")
                .resizable()
                .aspectRatio(contentMode: .fit)
                .frame(width: 200, height: 200)
                .saturation(isHighlighted ? 0.5 : 1.0)
                .brightness(isHighlighted ? -0.2 : 0.0)
                .animation(.easeInOut(duration: 0.5))
            
            Button(action: {
                self.isHighlighted.toggle()
            }) {
                Text("Change Style")
                    .font(.headline)
                    .foregroundColor(.white)
                    .padding()
                    .background(Color.blue)
                    .cornerRadius(10)
            }
        }
    }
}

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