Replace TMG FBA page with Exchange 2013 forms

Greetings all,

I found this blog entry from the Exchange team about publishing Exchange 2013 through TMG.

http://blogs.technet.com/b/exchange/archive/2012/11/21/publishing-exchange-server-2013-using-tmg.aspx

One thing I'd like to do now is change the TMG FBA screen to showthe same form as Exchange 2013 shows. Does anyone know whats involved in doing this? can I just "copy" a directory from the Exchange server to TMG with the required forms?