title: Set TextFromField style in Theme
body: <p>So in my flutter app, I create TextFormField to use as an input like so (and return it in a scaffold):</p>
  
  <pre><code>final password = TextFormField(
        controller: passController,
        autofocus: false,
        obscureText: true,
        decoration: InputDecoration(hintText: 'Password'),
        style: new TextStyle(color: Colors.orange),
  );
  </code></pre>
  
  <p>I would like to change the <code>style</code> property inside a <code>themeData</code>, but I couldn't find which property to specify.</p>
  
  <p>The closest one I could get to was <code>textTheme: new TextTheme(body1: new TextStyle(color: Colors.orange))</code>, but this one does nothing to my TextFormField.</p>
  
  <p>How can I set the TextFormField style? Please help, I'm really new to Dart and also programming. I'm currently 13 and I have nobody to help me out with these types of things.</p>
  
  <p>P.S: The complete code is on GitHub if needed: <a href="https://github.com/Legolaszstudio/novynotifier" rel="noreferrer">https://github.com/Legolaszstudio/novynotifier</a></p>