Here is a nice theme called Aero Berry by MonkeyBizIU, over at PinStack. The theme has a really nice background like the one for Vista, but in a dark color. The icons look much like the Vista icons, making the theme look sharp and clean.
This theme comes in different styles such as Today, Icon and Zen. I really like the way the dark colors blend in and make the icons stand out more, which makes it really nice to browse throughout the application icons. Keep up the good work.
To pick up a copy of this theme, you can download it OTA at the following links below or visit the site directly through this link MonkeyBizIU Aeroberry theme for 83xx.