Tango Windows Icons Pack Works on Windows 8 x32/x64 and Windows 7 x32/x64, I tested it by my self on Windows 7 and it works well, it is completely safe to apply and you can restore your previous icons easily.
Tango Windows Icon Pack uses 7tsp free app that allows you to customize Windows in a simple way, and it is also create system restore point to be safe.
you must download 7tsp from here first to use this icon pack.
Pingback: Snow Leopard Windows 8 Visual Style | Windows Themes Free