title: PyQt5, Qlabel text in multiple colors
body: <p>how can i set multiple colors inside a Qlabel text?
  for example:</p>
  
  <pre><code>Qlabel.setText("Hello World!")
  </code></pre>
  
  <p>I want the "Hello" to be in blue, the "World" in red &amp; the "!" in green
  is it possible?</p>
  
  <p>I found that answer online for QT but this is not Python language:</p>
  
  <pre><code>ql-&gt;setText("&lt;font color=\"blue\"&gt;Hello&lt;/font&gt; &lt;font color=\"red\"&gt;World&lt;/font&gt;&lt;font color=\"green"&gt;!&lt;/font&gt;");
  </code></pre>