<svg xmlns="http://www.w3.org/2000/svg">
  <metadata>
    <link xmlns="http://www.w3.org/1999/xhtml" rel="author" title="Dan Glastonbury" href="mailto:dglastonbury@mozilla.com"/>
    <link xmlns="http://www.w3.org/1999/xhtml" rel="help" href="https://www.w3.org/TR/SVG2/pservers.html"/>
    <link xmlns="http://www.w3.org/1999/xhtml" rel="match" href="currentColor-override-pserver-fallback-ref.svg"/>
    <meta xmlns="http://www.w3.org/1999/xhtml" name="assert" content="missing pattern fallback inherits fill color via currentcolor."/>
  </metadata>

  <g fill="url(#NotFound) currentcolor" color="red">
    <circle color="limegreen" stroke="black" cx="50" cy="50" r="40" />
  </g>
</svg>

<svg xmlns="http://www.w3.org/2000/svg">
  <!-- pattern inherits fill color via currentcolor -->
  <circle stroke="black" fill="limegreen" cx="50" cy="50" r="40" />
</svg>