title: Vuetify - change card loading style?
body: <p>I like the option </p>
  
  <pre><code>&lt;v-card :loading="loading"&gt;...
  </code></pre>
  
  <p>but I would like to change the style from linear progress bar to (for example) overlay. 
  I know I can change colors by binding color instead of boolean (true).</p>
  
  <pre><code>&lt;v-card :loading="'red'"&gt;...
  </code></pre>
  
  <p>But can I change the behavior in such a way? Either making the bar thicker or better, to show overlay when <code>loading=true</code>?</p>