Add half of the boiling apple juice to each of the Black Cherry and Lime gelatin mixes in separate bowls; stir 2 minute until completely dissolved. Pour each mixture into 9-inch square pans sprayed with cooking spray. Refrigerate 40 minute or until firm. Cut gelatin into 1/2-inch cubes. Refrigerate until ready to use.
Meanwhile, sprinkle unflavored gelatin over cold water; let stand 5 minute or until softened. While gelatin is softening, bring milk just to simmer in medium saucepan on medium heat. Add sugar and unflavored gelatin; cook and stir 2 minute or until sugar is dissolved. Cool 5 minute Whisk in yogurt until blended. Refrigerate 35 minute or until thickened but not set.
Gently fold Jello cubes into yogurt mixture and pour into a Bundt pan, which has been sprayed with cooking spray. Refrigerate 3 hours or until firm. Unmold dessert just before serving.
Substitute 1 container (16 oz.) Sour Cream for the yogurt. Prepare using your favorite combination of fruit juice and Jello, such as orange juice and Strawberry Jello.