I'm wondering if directly adding Triple Sec would work. I just might try that.
At first I thought "great idea!", but then I thought: "what about the sugar?"
If anyone has used things like Triple Sec, Blue Curacao* or Chartreuse or D.O.M. Benedictine (not oranges, I know, but yumm!) in juices I would be very very interested to know the results - instant atty killer? Slowish atty-killer? Carto-killer, but atties survive but gunk up quickly?
*In my mouth Blue Curacao is much less sweet than Triple Sec, but I wonder about the colour. It would probably look really neat in a clearomizer though...