SVG feBlend Element

<?xml version="1.0" standalone="no"?>
<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" 
"http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">

<svg width="100%" height="100%" version="1.1"
xmlns="http://www.w3.org/2000/svg">

<defs> 
<linearGradient id="MyGradient" gradientUnits="userSpaceOnUse"
x1="100" y1="0" x2="300" y2="0"> 
  <stop offset="0" style="stop-color:#000000"/> 
  <stop offset=".67" style="stop-color:#ffff00"/> 
  <stop offset="1" style="stop-color:#000000"/> 
</linearGradient> 
<filter id="normal"> 
  <feBlend mode="normal" in2="BackgroundImage"/> 
</filter> 
<filter id="multiply"> 
  <feBlend mode="multiply" in2="BackgroundImage"/> 
</filter> 
<filter id="screen"> 
  <feBlend mode="screen" in2="BackgroundImage"/> 
</filter> 
<filter id="darken"> 
  <feBlend mode="darken" in2="BackgroundImage"/> 
</filter> 
<filter id="lighten"> 
  <feBlend mode="lighten" in2="BackgroundImage"/> 
</filter> 
</defs>

<g style="enable-background:new"> 
<rect x="40" y="20" width="300" height="450"
style="fill:url(#MyGradient)"/>
<g style="font-size:75;fill:#888888;fill-opacity:.6">
<text x="50" y="90" style="filter:url(#normal)">Normal</text> 
<text x="50" y="180" style="filter:url(#multiply)">Multiply</text> 
<text x="50" y="270" style="filter:url(#screen)">Screen</text> 
<text x="50" y="360" style="filter:url(#darken)">Darken</text> 
<text x="50" y="450" style="filter:url(#lighten)">Lighten</text> 
</g> 
</g>

</svg>