I can think of two ways you can do. One is to download the source code, but I think that layout is custom for galaxy tablets.
The other option would be to use the Hierarchy View Perspective in Eclipse to determine the structure and details of the interface and from there replicate the interface.
Good luck!
Udapte:
Ok, if what you want is the drawables you can actually get them from the tablet. With a file manager in the tablet copy the file /System/app/System.apk to the SD card and from there to your computer. There change the extension to .zip and extract the contents. This way you can access only the drawables. The xml files are compiled so you can't see their content.
I think you can use this if you want more data out (like the xml layouts): http://code.google.com/p/android-apktool/
Although as I said in the comments I am not sure about the legality of this given this is Samsung's own IP.