The same as Windows 7, Windows 8 does not allow installation of fear custom (third-party) default, but they can be installed if before Patch Look SOME system files. Because Changing system files can be pretty risk, not recommended manual patch Their, especially in the case of beginner users, but this can be solved quickly and with minimal risks through utility UltraUXThemePatcher for Windows 8.
UltraUXThemePatcher It's a tool gratuit, with the help of which Windows 8 users can install teme third-party on the equipped systems. The application automatically identifies Windows version and patch-luces the necessary system files (uxthe.dll, themeui.dll and uxinit.dll) to make it possible to install custom themes.

A Back-up of original system files so that they can be restored if necessary.
After patching the system files, the custom themes you want to install must be copied to the folder C:WindowsResourcesThemes (where C is the partition on which Windows 8 is installed).
Note: Ultraux Patcher is compatible with Windows 8, Windows 7, Windows Vista and Windows XP (32-bit and 64-bit).
STEALTH SETTINGS – How to install third-party (custom) themes in Windows 8
 
			