<html xmlns="http://www.w3.org/1999/xhtml">
 <head>
  <title>currentColor</title>
  <style type="text/css">
   body { color: green; }
   p { color: black; }
   svg { background: red; }
  </style>
 </head>
 <body>
  <p>There should be a green block below.</p>
  <svg width="300" height="100" xmlns="http://www.w3.org/2000/svg">
   <rect x="0" y="0" width="100%" height="100%" fill="red"/>
   <rect x="0" y="0" width="100%" height="100%" fill="currentColor"/>
  </svg>
 </body>
</html>