title: Magento 2 get product attribute value of a multivalued field
body: <p>I have a custom attribute called 'Color', which is a select box, </p>
  
  <p>I have a instance of the product, and I want to get the selected value of my field 'Color'. The problem is when I try to do it its always returning null.</p>
  
  <p>This is my code:</p>
  
  <pre><code>$product-&gt;getCustomAttribute('prj_color')
  </code></pre>
  
  <p>This is always <code>null</code>. But if I try to get a different field, which is not a multivalued field, a textbox for example, I can get the value normally.</p>
  
  <p>I'm using Magento 2.1.5. Someone know whats going on?</p>