Mix COOL WHIP and food coloring until blended; spoon evenly into 4 freezerproof dessert dishes to resemble the rind of watermelon pieces as shown in photo. Freeze until ready to use.
Add boiling water to gelatin mix in medium bowl; stir 2 min. until completely dissolved.
Add ice; stir 5 min. or until gelatin is slightly thickened.
Remove any unmelted ice.
Spoon gelatin into prepared dessert dishes. Insert chocolate pieces into gelatin to resemble watermelon seeds. Refrigerate 30 min. or until gelatin is firm.