--- /dev/null
+<?xml version="1.0"?>
+<svg width="800" height="200" version="1.1"
+ xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
+ <defs>
+ <radialGradient id="MyGradient" gradientUnits="userSpaceOnUse"
+ cx="200" cy="100" r="150" fx="200" fy="100">
+ <stop offset="0%" stop-color="red" />
+ <stop offset="50%" stop-color="blue" />
+ <stop offset="100%" stop-color="red" />
+ </radialGradient>
+ <filter id="GreyOut">
+ <feColorMatrix type="saturate" in="SourceGraphic" values="0.05"/>
+ </filter>
+ </defs>
+
+ <rect fill="url(#MyGradient)" stroke="black"
+ x="40" y="40" width="300" height="160"/>
+
+ <g transform="translate(380,0)" filter="url(#GreyOut)">
+ <rect fill="url(#MyGradient)" stroke="black"
+ x="40" y="40" width="300" height="160"/>
+ </g>
+
+</svg>