I found this super pretty nail polish yesterday at Müller drugstore, it's by Alessandro International and the shade is 513 Streetwear.
The bottle is a miniature one (5 ml) and it's part of the current Dark Secret Winter Look Collection 2010.
Streetwear is a muted plum shade with a slight golden sheen (which unfortunately is not visible here in artificial lighting).
As for painting directions:
Base coat: Nail Tek Foundation III
Two coats of Streetwear
Top coat: Seche Vite