Skins (aka visual styles) designed specifically for WindowBlinds 6 are displayed with a special WindowBlinds 6 icon in the gallery. When a skinner submits a skni, they can now choose 2 new options: Optimized for WindowBlinds 6 and Supports Windows Vista. 

As an example, the first WindowBlinds 6 skin from Stardock Design has been uploaded into the gallery and can be found here.

Enjoy!