Both divs should have green background.

<div></div>
<div>Works with text</div>

<style>
div {
    width: 200px;
    height: 50px;
    background-color: currentColor;
    text-shadow: 1px 1px 0 white;
    margin: 1rem 0;
}
</style>

<script>
window.onload = async function() {
    if (window.testRunner)
        testRunner.waitUntilDone();
    document.body.offsetLeft;
    await new Promise(requestAnimationFrame);
    await new Promise(requestAnimationFrame);
    await new Promise(requestAnimationFrame);
    await new Promise(requestAnimationFrame);
    [...document.querySelectorAll('div')].map(div => div.style.color = "green");
    if (window.testRunner)
        testRunner.notifyDone();
}
</script>