How to override styles of existing Skin(Cobalt Graphical) using MX Component?

Hello ,

We are using Flash Builder 4.7 with ASP.Net 4.0 in our application. The generated SWF is getting integrated in web page.

I need to override few styles of existing skin (Cobalt Graphical - using MX Components). Can someone guide where and how to customize the existing skin classes ?

Thanks,

NS