Long ago I had a set of Mikasa china called Nightshades. It was all black with a pattern of violets on the rim. That would be the perfect vintage cup for Black Metallic. It's one of the best smelling (and best looking!) floral teas, both in the tin and in the pot - and the strong violet/elderflower taste follows through. Another one that I'd love to try iced or in a cocktail.