Where can I find the default flex 4.5 skins?

Can开发者_运维问答 anyone help me locate the default skin files for Flex 4.5. I want to see how the inner shadow effect has been drawn so I can use the same technique in my own custom skins but I can't find them in the SDK.

Thanks

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Try to search them here {flex4.5 sdk root}/frameworks/projects/spark/src/spark/skins. Mobile skins are located here {flex4.5 sdk root}/frameworks/projects/mobiletheme.