title: How to override the text color in TextField in Jetpack Compose using MaterialTheme?
body: <p>I'm trying to use <code>TextField()</code> from Jetpack Compose. I want the text color to be white.</p>
  <p>I found this to be working:</p>
  <pre><code>ProvideTextStyle(TextStyle(color = Color.White)) {
     TextField(
         ...
     )
  }
  </code></pre>
  <p>However, I want to override this in the Theme level, so that I don't need to repeatedly write <code>ProvideTextStyle</code>. I saw that <code>MaterialTheme</code> only accepts the following params:</p>
  <pre><code>@Composable
  fun MaterialTheme(
      colors: Colors = MaterialTheme.colors,
      typography: Typography = MaterialTheme.typography,
      shapes: Shapes = MaterialTheme.shapes,
      content: @Composable () -&gt; Unit
  )
  </code></pre>
  <p>So I'm not sure how to do it. Can someone help?</p>
  <p><em>(compose version = 1.0.0-alpha11)</em></p>