<? xml version="1.0" encoding="utf-8" ?>

<!--  http://blog.flexexamples.com/2007/11/27/alternating-row-colors-in-a-flex-tree-control-using-the-alternatingitemcolors-style/  -->

< mx:Application  xmlns:mx ="http://www.adobe.com/2006/mxml"

        layout ="vertical"

        verticalAlign ="middle"

        backgroundColor ="white" >

     < mx:XMLListCollection  id ="xmlListColl" >

         < mx:source >

             < mx:XMLList >

                 < node  label ="One" >

                     < node  label ="One.1"   />

                     < node  label ="One.2"   />

                     < node  label ="One.3"   />

                 </ node >

                 < node  label ="Two" >

                     < node  label ="Two.1"   />

                     < node  label ="Two.2"   />

                     < node  label ="Two.3"   />

                 </ node >

             </ mx:XMLList >

         </ mx:source >

     </ mx:XMLListCollection >

     < mx:Tree  id ="tree"

            dataProvider ="{xmlListColl}"

            labelField ="@label"

            alternatingItemColors ="[#DFDFDF,#EEEEEE]"

            rowCount ="4"

            width ="300"   />