title: Scoping sass variable
body: <p>Is there a way to add scope to sass variables? </p>
  
  <p>I want to be able to attach a class to my <code>body</code> element. The class will refer to a set of colours that the rest of the stylesheets can access.</p>
  
  <p>I have tried:</p>
  
  <pre><code>@mixin theme_one{
      $color: #000;
  }
  .theme_one{
    @include theme_one;
  }
  </code></pre>
  
  <p>and</p>
  
  <pre><code>.theme_one{
  
    $color: #000;
  }
  </code></pre>