<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1000 500"> | |
<filter id="saturate-back"> | |
<feColorMatrix in="SourceGraphic" type="saturate" values="1"/> | |
</filter> | |
<g filter="url(#saturate-back)"> | |
<rect x="-500" y="0" width="950" height="100%" fill="green"/> | |
<rect x="550" y="0" width="950" height="100%" fill="green"/> | |
</g> | |
<rect x="450" y="0" width="100" height="100%" fill="none" stroke="white" stroke-width="10"/> | |
</svg> |