设立flex ColumnChart中ColumnSeries字体大小等样式

设置flex ColumnChart中ColumnSeries字体大小等样式
flex3中

        <mx:Style>            LegendItem {                color: black;                font-family: Arial;                fontSize: 16;                fontWeight: normal;            }        </mx:Style>

<fx:Style>@namespace s "library://ns.adobe.com/flex/spark";@namespace mx "http://www.adobe.com/2006/mxml";mx|LegendItem {color: black;font-family: Arial;fontSize: 20;fontWeight: normal;}</fx:Style>