chromium/third_party/blink/web_tests/dark-mode/images/opt-out-background-image.html

<!DOCTYPE html>
<link rel="match" href="opt-out-background-image-expected.html">
<style>
  div {
    color-scheme: light only;
    background:transparent url(resources/background.png) no-repeat;
    width: 400px;
    height: 400px;
  }
</style>
<body>
<div></div>
</body>