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chromium/third_party/blink/web_tests/virtual/dark-color-scheme/media/video-controls-rendering.html 

<html>
<script src="../../../media/media-file.js"></script>
<script src="../../../media/video-paint-test.js"></script>
<script src="../../../media/media-controls.js"></script>
<meta name="color-scheme" content="dark">

<video controls>
</video>

<script>
    const videos = document.getElementsByTagName('video');
    for (var i = 0; i < videos.length; ++i) {
        enableTestMode(videos[i]);
    }
    init();
    setSrcByTagName('video', '../../../media/content/test.ogv');
</script>

</html>