My first pass at El Diablo pops, based on the El Diablo cocktail as it appears in the Nopalito cookbook: Tequila, lime juice, ginger beer and just a few dashes of cassis.
Not bad. I added a little cassis to the mix, then added 2-3 drops to each mold to get sort of a gradient effect and that worked pretty well. They are kind of icy since there's no fruit pulp, just juice.
I think I'll try adding some cucumber purée to the next batch to see if that helps.