title: Flex: How to create a color Glow filter with duration
body: <p>I need to highlight a button's border, so I have created a glow filter like this:</p>
  
  <pre><code>&lt;s:GlowFilter id="GlowFilter1"
    color="0xD9D919"
     blurX="30" blurY="40"
    alpha="1"
   /&gt;
  </code></pre>
  
  <p>The problem is that I don't know to remove the effect. The effect remains in the opction as it was highlighted.
  Thus, I'd like to set a duration, or something that removes the effect I create.</p>
  
  <p>Thanks.     </p>