I recalled a NY Times article about the deep south specialty that is the Kool Aid Pickle. Kool Aid pickles are your normal kosher dills that have been steeped in sugary Kool Aid brine. Supposedly, the pickles come out with an addictive sweet/sour tang, and the added bonus of having absorbed the garish color of your chosen Kool Aid flavor. It seemed to me that the Four Loko might be a good analogue for the Kool Aid in this recipe, only with more alcohol and caffeine.
Four Loko Pickles (Part I)