<!DOCTYPE html>
<html>
<body>
<img src="../resources/green-400x400.png"></img>
<script>
addEventListener("load", () => {
    let image = document.querySelector("img");
    internals.installImageOverlay(image, [
        {
            topLeft : new DOMPointReadOnly(0.5, 0.5),
            topRight : new DOMPointReadOnly(1, 0.5),
            bottomRight : new DOMPointReadOnly(1, 1),
            bottomLeft : new DOMPointReadOnly(0.5, 1),
            children: [{
                text : "Hello",
                topLeft : new DOMPointReadOnly(0.5, 0.5),
                topRight : new DOMPointReadOnly(1, 0.5),
                bottomRight : new DOMPointReadOnly(1, 1),
                bottomLeft : new DOMPointReadOnly(0.5, 1),
            }],
        }
    ]);
    internals.shadowRoot(image).getElementById("image-overlay").style.color = "black";
});
</script>
</body>
</html>