Windows 7 has Aero glass effect which is by default disabled in Windows 8 by Microsoft. Windows 8 have a new style of theme and no glass effect but some of them like aero glass effect and want in Windows 8. you can get back glass effect into windows 8 by using Winareo Glass.
Download Winaero Glass from the developer website. Simply double click on an app it will bring aero effect. Since software doesn’t have any User interface, simply run the software. Once you log off from your account, the Glass effect stop.