title: change part of the text color in UiBinder
body: <p>I have a text:</p>
  
  <pre><code>&lt;g:Label ui:field="titleLabel"&gt;text RedText someMoreText&lt;/g:Label&gt;
  </code></pre>
  
  <p>Now I'd like to make <code>RedText</code> red. I can't set any widget inside <code>&lt;g:Label&gt;</code> tags, or html elements. But how is this done then?</p>