here's the recipe for the boozy version (courtesy of allears.net) Looks like 3 parts pina colada smoothie & 1 part raspberry smoothie would do a good imitation for you. As Jeanieblue mentioned, it's smoothie mixes they're using...that's what Island Oasis Raspberry is.
Pina Colava
Preparation:
Pour layer of Island Oasis Raspberry in empty glass. Build remaining ingredients in blender over ice, freeze & pour over raspberry.
1.25 ounces Bacardi Razz
3 ounces Bacardi Pina Colada
1 ounce Island Oasis Raspberry