Discover From This Page & Topic: [Discover] components
[Discover] Adobe Flex 2 Component Explorer http://examples.adobe.com/flex2/inproduct/sdk/explorer/explorer.html
(flex reference flash programming) 
[Discover] Source of CustomFormItem http://www.munkiihouse.com/flexapps/CustomFormItem/srcview/index.html (components flex)
[Discover] Flex 2 Style Explorer http://examples.adobe.com/flex2/consulting/styleexplorer/Flex2StyleExplorer.html (flex css reference style)