FirefoxのタブアイコンをFx4以降っぽくするfilter用svg、Fx6でアイコンが明るくなるバグを確認、9だと大

<svg xmlns="http://www.w3.org/2000/svg" version="1.1" width="0" height="0">
  <defs>
    <filter id="fx4ize">
      <feColorMatrix type="matrix" in="SourceGraphic" color-interpolation-filters="sRGB"
        values="0 0 0 0 0.08
                0 0 0 0 0.12
                0 0 0 0 0.16
                0 0 0 1 0.00" result="edge" />

      <feColorMatrix type="matrix" in="SourceGraphic"
        values="0 0 0 0.00 1
                0 0 0 0.00 1
                0 0 0 0.00 1
                0 0 0 0.25 0" result="glow" />
      <feOffset in="glow" dy="1" result="offsetGlow" />
      <feGaussianBlur in="glow" stdDeviation="1" result="gaussGlow" />

      <feColorMatrix type="matrix" in="SourceGraphic"
        values="0 0 0 1 0
                0 0 0 1 0
                0 0 0 1 0
                0 0 0 1 0" result="alpha" />

      <feMorphology operator="erode" in="alpha" radius="1" result="inset" />

      <feColorMatrix type="matrix" in="SourceGraphic"
        values="0.213 0.715 0.072 0 0
                0.213 0.715 0.072 0 0
                0.213 0.715 0.072 0 0
                0 0 0 1 0.00" result="gray" />

      <feComposite in="gray" in2="inset" operator="in" result="comp" />

      <feColorMatrix type="matrix" in="comp" color-interpolation-filters="sRGB"
        values="0 0.62 0 0 0.08
                0 0.64 0 0 0.12
                0 0.66 0 0 0.16
                0 0.00 0 1 0.00" result="inner" />

      <feMerge>
        <feMergeNode in="gaussGlow" />
        <feMergeNode in="offsetGlow" />
        <feMergeNode in="edge" />
        <feMergeNode in="inner" />
      </feMerge>
    </filter>
    <filter id="grayscale">
      <feColorMatrix type="matrix" in="SourceGraphic"
        values="0.213 0.715 0.072 0 0
                0.213 0.715 0.072 0 0
                0.213 0.715 0.072 0 0
                0 0 0 1 0.00" />
    </filter>
  </defs>
</svg>