chromium/third_party/blink/web_tests/svg/as-image/resources/animated-rect-color.svg

<svg xmlns='http://www.w3.org/2000/svg' width='100' height='100'>
  <rect width='100' height='100' fill='blue'>
    <set attributeName='fill' to='green' dur='0.075s'/>
  </rect>
</svg>