apply styleSheet to datatips of ColumnChart control in flex

how can开发者_开发问答 i apply styleSheet to datatips of ColumnChart control in flex?

thanks.

In a css file bounded to your application you write:

@namespace s "library://ns.adobe.com/flex/spark";
@namespace mx "library://ns.adobe.com/flex/mx";
@namespace chartClasses "mx.charts.chartClasses.*";

chartClasses|DataTip {
    background-color: #FF0000;
    border-style: inset;
    /*specify the styles you want*/
}

or inside your application, between <fx:Style>[..]</fx:Style> tags.