<svg width="480px" height="600px" xmlns="http://www.w3.org/2000/svg">
<defs>
    <filter id="filter" filterUnits="objectBoundingBox" x="0" y="0" width="100%" height="100%">
        <feFlood flood-color="rgb(0, 128, 0)"/>
    </filter>
</defs>
<rect x="0" y="00" width="400" height="400" filter="url(#filter)"/>
</svg>