I found this very unusual recipe at http://www.neosoft.com/recipes/snacks/popcorn-balls.html

KOOL-AID POPCORN (COLORED POPCORN)

2 CUPS SUGAR
1 CUP LIGHT CORN SYRUP
2 PKG. KOOL-AID (ANY FLAVOR)
1 TEASPOON BAKING SODA

Boil the sugar, syrup and margarine together for 3 minutes. Stir in soda and Kool-aid, pour over 6 quarts popcorn.

Bake at 225 degrees for 45 minutes, stirring every 10 minutes.

Remove from oven and break up immediately.

Not sure if this is the one you're looking for, but it was so interesting that I had to post it.

Good luck