title: Is it possible to define constants in CSS?
body: <p>I use a few colors throughout my CSS style sheet. For example,</p>
  <pre><code>#testdiv{
    background: #123456;
  }
  </code></pre>
  <p>Is it possible to define that color by name so I can reference it in the CSS sheet like the following?</p>
  <pre><code>#testdiv{
    background: COLORNAME;
  }
  </code></pre>