With Windows 8/8.1 release and Microsoft's decision to eliminate Aero Glass effect from OS, until now i was used to use WindowBlinds from Stardock, but even so, this software themes are buggy and have issues in giving you a full native Aero experience on Windows 8/8.1 - even in previous Windows versions 7 / Vista / XP But now, you can use Aero Glass for Windows 8/8.1 v1.2. So, if until now the developer supported only Windows 8 and had an Alpha version of the software for Windows 8.1, from now, we can use its tiny software to have the Aero transparency in Windows 8.1 too... and the most important thing it is fully native with the OS, so you will not encounter any issues/buggy images like the paid version of WindowBlinds from Stardock!!! *And its Free! LINK: glass8.berlios.de