title: Changing three.js background to transparent or other color
body: <p>I've been trying to change what seems to be the default background color of my canvas from black to transparent / any other color - but no luck.</p>
  
  <p>My HTML:</p>
  
  <pre><code>&lt;canvas id="canvasColor"&gt;
  </code></pre>
  
  <p>My CSS:</p>
  
  <pre><code>&lt;style type="text/css"&gt;
  #canvasColor {
   z-index: 998;
  opacity:1;
  background: red;
  }
  &lt;/style&gt;
  </code></pre>
  
  <p>As you can see in the following online example I have some animation appended to the canvas, so cant just do a opacity: 0; on the id.</p>
  
  <p>Live preview:
  <a href="http://devsgs.com/preview/test/particle/">http://devsgs.com/preview/test/particle/</a></p>
  
  <p>Any ideas how to overwrite the default black?</p>