Well, as my brunch approached, I still could not get that beverage out of my head, so I decided to experiment, not having quantities or order of pouring. I used

Tropical Sunrise

Apricot nectar
Orange juice from concentrate( using only half the water to reconstitute)
Lemon-lime soda
Grenadine

I poured approximately 1/3 of the glass with apricot nectar, another third with orange juice, and topped it almost to the top with soda. Then I slowly drizzled in about a Tbsp or so of Grenadine. It sinks to the bottom and you end up with a beverage that tastes great and makes a beautiful presentation! You can then stir it or drink it as is. My friends were duly impressed! Hope you get a chance to try it soon!