title: MagicaVoxel Matter properties not showing in A-Frame
body: <p>I am using MagicaVoxel to build my scene, exporting via <code>File &gt; Export &gt; obj</code> and importing via</p>
  
  <pre><code>&lt;a-assets&gt;
      &lt;a-asset-item id="sceneObj" src="assets/scene.obj"&gt;&lt;/a-asset-item&gt;
      &lt;a-asset-item id="sceneMtl" src="assets/scene.mtl"&gt;&lt;/a-asset-item&gt;
  &lt;/a-assets&gt;
  &lt;a-entity obj-model="obj: #sceneObj; mtl: #sceneMtl"&gt;&lt;/a-entity&gt;
  </code></pre>
  
  <p>I can change the material of portions of the scene via MagicaVoxel's "Matter" tools in the Render view, but properties like transparency do not transfer to the scene in A-Frame. Neither can I set <code>transparency="true" opacity="0.5"</code> on an entire model and see my desired results.</p>
  
  <p>For now I have settled on using A-Frame primitives to create the portions of my scene that require transparency, but if it is possible to create more elements via MagicaVoxel I would prefer that for stylistic consistency and ease of workflow. Is this not possible or am I doing something wrong?</p>
  
  <p>EDIT1:
  Here's the version where I'm setting transparency:<br>
   - <a href="https://github.com/beccannlittle/beccannlittle.github.io/blob/ef08a2dea437ce8b3db12b576baf9a2872f2893b/index.html" rel="nofollow noreferrer">Code</a><br>
   - <a href="https://beccannlittle.github.io/" rel="nofollow noreferrer">Running application</a></p>
  
  <p>EDIT2: 
  Removed <code>aframe-extras</code>.</p>