Purple Rain Cocktail ~ 1 oz Vodka, 1 oz Blue Curaçao, 1 oz Coconut Rum, ½ oz Lemon-Lime Soda, Splash of Grenadine Half fill a shaker with ice. Pour in the Vodka, Blue Curaçao, Coconut Rum and Lemon-Lime Soda. Stir or shake gently. Pour into a glass and add the Grenadine over the top. As the red of the Grenadine drips down the blue drink you should get the impression of purple rain.