title: FlowType React Context
body: <p>Is there a way to make React <a href="https://facebook.github.io/react/docs/context.html" rel="noreferrer">Context</a> type-safe with flow type?</p>
  
  <p>For example :</p>
  
  <pre><code>Button.contextTypes = {
    color: React.PropTypes.string
  };
  </code></pre>