如何为SwiftUI矩形添加两种不同的颜色？

Rectangle()
    .fill(LinearGradient(gradient: Gradient(colors: [Color.red, Color.blue]), startPoint: .leading, endPoint: .trailing))
    .frame(width: 200, height: 100)

Rectangle()
    .fill(Color.red)
    .frame(width: 200, height: 100)
    .overlay(
        Rectangle()
            .fill(Color.blue)
            .frame(width: 100, height: 100)
    )