Light Windows 7 Visual Style.
Youtube Windows 7 Visual Style is based on Youtube December 2012 layout.
you can change the background by right click on any wallpaper of bunch of wallpapers and click on set as backgrounds.
It works off course on both x32 and x64 but system32 is for x32 only.
System32 “ For x32 Only” download from mediafire.
Password >> HKK98system32