Step 1: Cut each orange in half. Remove the orange sections, leaving the peel. You can scoop the oranges out yourself or you can use an electric juicer.
Step 2: Following the directions on the box, make 6 different flavors of gelatin. Fill 3 orange cups with one color and repeat this step with the other colors, filling 3 cups for each.
Step 4: Remove each orange cup from the muffin tin and slice each cup into 3 wedges.