如何让用户使用 ColorPicker 选择颜色？

struct ContentView: View {
    @State private var bgColor = Color.red

    var body: some View {
        VStack {
            ColorPicker("Set the background color", selection: $bgColor)
        }
        .frame(maxWidth: .infinity, maxHeight: .infinity)
        .background(bgColor)
    }
}

struct ContentView: View {
    @State private var bgColor = Color.red

    var body: some View {
        VStack {
            ColorPicker("Set the background color", selection: $bgColor, supportsOpacity: false)
        }
        .frame(maxWidth: .infinity, maxHeight: .infinity)
        .background(bgColor)
    }
}