Burlesque babe Dita von Teese is now the face of Cointreau, and she has her own signature drink:

"Cointreau Teese

1 ½ oz. Cointreau
¾ oz. apple juice
½ oz. Monin violet syrup
½ oz. fresh lemon juice

Shake and strain into a martini glass with a ginger-frosted rim; garnish with a violet. Bottoms up. "

For those unfamiliar with it, yes, there apparently IS violet syrup, such as this one from Monin: