title: Change the background color of a view in swiftUI
body: <p><img src="https://i.stack.imgur.com/OP6be.png" alt="enter image description here" /></p>
  <p>I want to make a simple form and change the background color of a text field, but Xcode provide me <code>.background(background: View)</code>, etc option but not <code>.background(Color()</code>).</p>