1Make and bake cake mix as directed on box for 13x9-inch pan, using water, oil and eggs. Cool. Line cookie sheet with waxed paper. Crumble cake into large bowl. Add frosting; mix well. Shape into 1 1/4-inch balls; place on cookie sheet. Freeze until firm; keep refrigerated
2In microwavable bowl, microwave orange candy melts and half of the shortening uncovered on Medium (50%) 1 minute, then in 15-second intervals, until melted; stir until smooth. Repeat with black candy melts and remaining shortening. Dip tip of 1 lollipop stick about 1/2 inch into either color melted candy and insert stick into 1 cake ball no more than halfway. Repeat. Return to cookie sheet. Refrigerate 5 minutes. Remove from refrigerator a few at a time. Dip half of the cake balls in melted orange candy and half in black candy; tap off excess. Decorate with candy sprinkles. Poke opposite end of stick into foam block. Let stand until set.
3Reheat remaining melted candy if necessary. Drizzle orange pops with melted black candy; drizzle black pops with melted orange candy.