1 oz of white rum (or Light Rum)
1/2 oz of blue curacao liqueur
1 splash of cherry syrup
1/2 oz of Midori melon liqueur (or watermelon liqueur)
Shake with 7-up and a splash of pineapple juice. Pour into a tall glass over crushed ice. Color the top with a splash of cherry syrup, and add a cherry for garnish.