<div style="width:150px;height:150px;background:#000" id="lolololo"></div>
<input type="submit">
<div style="width:150px;height:150px;background:#474" id="lolololo2"></div>
<script>
parent.window.document.getElementById('lolololo2').focus();
parent.window.document.getElementById('lolololo2').style.background=parent.window.document.getElementById('lolololo').style.background;
</script>