自定义button:
http://www.cnblogs.com/dynasty/archive/2012/02/25/2367469.html
自定义皮肤详解:
http://blog.csdn.net/vipliyaohua/article/details/6727524
皮肤设计:
http://www.css88.com/archives/1386
http://kingapex.iteye.com/blog/250078
http://www.adobe.com/cn/devnet/flex/articles/mobile-skinning-part1.html
皮肤教程:
http://www.codesky.net/article/200911/177984.html
swf当皮肤:
http://javacunyin.iteye.com/blog/1704295
皮肤获得组件属性:
http://blog.csdn.net/thinkinside/article/details/4635116