Flex Gumbo中如何通过contentBackgroundColor样式，设置TextInput内文本背景颜色

main.mxml

1. <?xml version="1.0" encoding="utf-8"?>
2. <s:Applicationname="Spark_TextInput_contentBackgroundColor_test"
3. xmlns:fx="http://ns.adobe.com/mxml/2009"
4. xmlns:s="library://ns.adobe.com/flex/spark"
5. xmlns:mx="library://ns.adobe.com/flex/halo">
7. <mx:ApplicationControlBarwidth="100%" cornerRadius="0">
8. <mx:FormstyleName="plain">
9. <mx:FormItemlabel="contentBackgroundColor:">
10. <mx:ColorPickerid="colorPicker"
11. selectedColor="#FFFFFF"/>
12. </mx:FormItem>
13. </mx:Form>
14. </mx:ApplicationControlBar>
16. <s:TextInputid="textInput"
17. text="The quick brown fox jumps over the lazy dog"
18. contentBackgroundColor="{colorPicker.selectedColor}"
19. horizontalCenter="0"
20. verticalCenter="0"/>
22. </s:Application>