<?xml version="1.0"?>
<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.0//EN"
    "http://www.w3.org/TR/2001/REC-SVG-20010904/DTD/svg10.dtd">

<svg width="100" height="100"
  xmlns="http://www.w3.org/2000/svg">
  <circle cx="50" cy="50" r="30"
    style="fill: #ff9; stroke:black;">
    <animate attributeName="fill"
      begin="2s" dur="4s" values="#ff9;#99f;#f99;#9f9"
      fill="freeze"/>
  </circle>
</svg>