flex - Removing the border at the bottom of the list items -

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enter image description here

highlighted portion in red! how remove it? code render list below:

<s:list id="ui_lstindexlist" width="175" height="600" fontfamily="twincen"                 fontsize="24"                 alternatingitemcolors="[]" bordervisible="false" downcolor="#7fceff"                 change="showalert(event)" contentbackgroundcolor="#6fa8bc" color="#ffffff"                 dataprovider="{indexarraycollection}" selectioncolor="#7fceff">             <s:itemrenderer>                 <fx:component>                     <s:iconitemrenderer labelfield="name" messagefield="artist"/>                 </fx:component>             </s:itemrenderer>         </s:list>

thanks!!!

click iconitemrenderer, , start typing "skinclass." when use code completion, offer option of "new skin..." use create new, editable skin. if not there, in list skin.


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