    <smil xmlns="http://www.w3.org/2001/SMIL20/Language">
      <head>
        <layout>
          <root-layout backgroundColor="#eeffcc" width="640" height="480"/>
          <region id="T2" height="170" width="175" backgroundColor="black" z-index="1" />
          <region id="T1" height="85" width="85" top="45" left="45" backgroundColor="black" z-index="2" />
          <region id="r" fit="fill"/>
        </layout>
      </head>
      <body>
        <par dur="indefinite">
          <img region="r" src="../images/spline_img04.gif" top="215" fit="hidden"/>
          <animateColor begin="2s" dur="6s" calcMode="spline" keySplines="1 0 .25 .25" keyTimes="0; 1" targetElement="T1" values="black;white" additive="sum" attributeName="backgroundColor" fill="remove"/>
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        </par>
      </body>
    </smil>