修改组件样式的各种写法（Button为例）

1:

<mx:Button label="Button 1" borderColor="red" />

2:

<mx:Button label="Button 2">
    <mx:borderColor>red</mx:borderColor>
</mx:Button>

3:

<mx:Style>
    .MyButton {
        borderColor: red;
    }
</mx:Style>

<mx:Button label="Button 3" styleName="MyButton" />

4:

<mx:Style>
    Button {
        borderColor: red;
    }
</mx:Style>

<mx:Button label="Button 3" />

5:

<mx:Style source="styles.css" />

<mx:Button label="Button 3" />

/**//* CSS file */
Button {...}{
    borderColor: red;
}

6:

<mx:Script>
    <![CDATA[
        private function button4_init():void {
            button4.setStyle("borderColor", "red");
        }
    ]]>
</mx:Script>

<mx:Button id="button4"
        label="Button 4"
        creationComplete="button4_init();" />