Yeah, also I feel the rainbow colours with a Gaussian blur looks pretty dated too - reminds me of Aero Glass. Android at its best looks much nicer, though it can be very inconsistent, even within Google-developed apps.
AeroGlass looks still very nice and fresh in Windows 7. Windows 8x/10 theme is too flat for a desktop OS and the color choices imo plain ugly. Microsoft removed most of the complex transparent effects because the Nokia/MS WinPhones 7-8 devices were too slow to handle them, that's why the desktop has to suffer as well. The iOS 7-9 and OSX themes have a lot better colors.