Stardock has a registered trademark on StyleVista so good luck to them.
On Windows XP, Stardock had intended to have CursorXP, BootXP, LogonXP, and WinStyles XP (for the XP version of WinStyles which ended up being called Theme Manager after TGT Soft arrived on the scene and used the name Style).
On Windows Vista, we were more careful to make sure that our naming convention got in early enough to not have third party interference.
StyleVista will essentially be the Vista version of WindowFX.