title: Revert theme to default
body: <p>How can I revert my theme back to the default one in Highcharts after I have applied some theme?</p>
  
  <p>I tried this but doesn't work.</p>
  
  <pre><code>Highcharts.theme = {
  };
  var highchartsOptions = Highcharts.setOptions(Highcharts.theme); 
  </code></pre>
  
  <p>I tried also the solution described <a href="http://www.highslide.com/forum/viewtopic.php?f=9&amp;t=5586" rel="nofollow">here</a>  </p>
  
  <blockquote>
    <p>removing all of the color options from the code below and reloading
    the Highcharts object will make it default to the basic theme</p>
  </blockquote>
  
  <p>...but it doesn't work either.</p>
  
  <p>Thanks</p>