Apply the Fade effect to the Label control using the system font
<?xml version="1.0"?> <mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"> <mx:Style> @font-face { src:url("a.ttf"); font-family: myFont; } </mx:Style> <mx:Fade id="fadeOut" alphaFrom="1.0" alphaTo="0.5" /> <mx:Fade id="fadeIn" alphaFrom="0.5" alphaTo="1.0" /> <mx:VBox> <mx:Label fontFamily="myFont" mouseDownEffect="{fadeOut}" mouseUpEffect="{fadeIn}" text="uses the WebPro embedded font and the text will fade." /> </mx:VBox> </mx:Application>