如何检测SwiftUI颜色选择器的颜色何时更新？

@State private var selectedColor = Color.red

ColorPicker("Select a color", selection: $selectedColor)
    .onChange(of: selectedColor) { newColor in
        // 颜色发生变化时执行的操作
    }

struct ContentView: View {
    @State private var selectedColor = Color.red
    
    var body: some View {
        ColorPicker("Select a color", selection: Binding($selectedColor) { newValue in
            // 颜色发生变化时执行的操作
        })
    }
}