color-picker-appearance-set-value.html

<!DOCTYPE html>
<meta name=fuzzy content="maxDifference=0-3; totalPixels=0-1000">
<script src="../../../resources/testdriver.js"></script>
<script src="../../../resources/testdriver-vendor.js"></script>
<script src="../resources/picker-common.js"></script>

<input type='color'>

<script>
  window.onload = openPickerAppearanceOnly(document.querySelector('input'),() => {
    document.querySelector('input').value = '#7EFFC9';
  });
</script>

chromium/third_party/blink/web_tests/fast/forms/color/color-picker-appearance-set-value.html