Windows 7 has more themes .. click to see on how to unlock!
Some themes you can unlock yourself! The Windows 7 operating system has some hidden & locked themes that were created for countries all over the world (Australia, Canada, Great Britain, United States and South Africa).
Actually it’s pretty easy to unlock them.
1. Simply open the Explorer (Windows + E) and go to C:\Windows\winsxs
2. Enter *.theme into the search field.