Does anyone know anything about Nintenskinz for homebrew or how to apply them??

Ive scoured google for a good hour tryin to find a tut or link that would tell me how to apply a nintenskin to my homebrew channel and I found nothin..

Heres a link to them..

Nintenskinz

Im really intrested in them.

They are Homebrew skinz right??

As I look closer they dont look like they are..
Am I way off on another planet here??
Are they for somethin else?

As far as I can tell, that's for something on the gamecube