title: javafx transparent window background with decorations
body: <p>I'm having a hard time figuring out how to make a transparent background for an application window in javafx. <code>scene.setFill(null)</code> seems to only work with <code>stage.initStyle(StageStyle.TRANSPARENT)</code>. Doc for <code>setFill</code> says</p>
  
  <blockquote>
    <p>Both a null value meaning paint no background and a Paint with transparency are supported, but what is painted behind it will depend on the platform.</p>
  </blockquote>
  
  <p>but that doesn't make sense to me. It works (on windows 8) only with <code>StageStyle.TRANSPARENT</code> which removes the exit button and such which I still want.</p>
  
  <p>I've looked at <a href="http://www.adam-bien.com/roller/abien/entry/completely_transparent_windows_stage_in" rel="nofollow">http://www.adam-bien.com/roller/abien/entry/completely_transparent_windows_stage_in</a> and a few questions here.</p>
  
  <p>Can this be done on windows?</p>