Unfortunately we do not know the author of that skin. It is loaded from motofunvn

Installation instructions:
This skin is optimized to be loaded from the SD card. When you Unzip the archive you will see the chm and skin folders. Copy theme83.chm to the phone memory at /ezxlocal/download/appwrite/setuptheme (use telnet connection) and the "Themes" folder into the root folder of your memory card