UxStyle Core
UXStyle Core is one such lite weight tool that lets you install unsupported themes for Windows 7. It’s designed for users with minimal technical knowledge. UXStyle Core tool creates a process “UnsignedThemesSvc.exe” that runs in background. Just install the software and UxStyle Core will do all necessary settings for you.This is a great way, to modify your desktop with custom themes.
You can see how to use the UxStyle Core HERE
