title: Different colors for folds and subfolds in Vim
body: <p>Is it possible to have different set of colors for folds and subfolds, eg:</p>
  
  <ul>
  <li>blue foreground on grey background for fold level 1 (default)</li>
  <li>black foreground on dark yellow background for fold level 2</li>
  <li>etc... (although going further down would seem a bit excessive)</li>
  </ul>