Vintage Vaneli di notte Dark Shimmer Strappy Heels

Vintage Vaneli di Notte dark strappy heels. Color and fabric is hard to explain but they have a mettalic shimmer and changes with light. So I'm not sure even if they are a black or dark gray with silver shimmer but isn't glitter. In very good clean condition and comes from a smoke free home. Never used. No original box available. Size 6. Sorry but pics don’t show the metallic sheen.