LayoutTests/fast/css/scrollbar-dynamic-style-change-expected.html

<style>
::-webkit-scrollbar {
    background: green;
}
html {
    color: black;
}
body {
    overflow: scroll;
}
div {
    overflow: scroll;
    width: 200px;
    height: 200px;
}
</style>
<div></div>
</script>