chromium/third_party/blink/web_tests/printing/text-color-adjust.html

<!DOCTYPE html>
<script>
    if (window.testRunner)
        testRunner.setPrinting();
</script>
<style>
    #sandbox { color: white }
</style>
<p>This test must be run in print preview.</p>
<div id="sandbox">
    <ol>
        <li>PASS if you see this text with 1. to its left.</li>
    </ol>
    <ul>
        <li>PASS if you see this text with a disc marker.</li>
    </ul>
</div>