title: fill property not working for SVGs
body: <p>I get my SVGs from thenounproject.com, however i cannot change their color as fill does nothing.</p>
  
  <p>I am using Ruby on Rails, so I used &lt;%= image_tag('#'), :class => "tomatoe" %></p>
  
  <p>and my css looks like this </p>
  
  <pre><code>.tomatoe{
      @include transition-property(all);  
      @include transition-duration(1s);
      fill: white;
      width: 100px;
      margin-top: 1em;
  }
  </code></pre>
  
  <p>Fill never works, tried it on several SVGs but no luck and I have no clue why.</p>