In a small saucepan, sprinkle gelatin over 1/2 cup cold water; let stand for 1 minute. Cook and stir over low heat until gelatin is completely dissolved; set aside.
In a bowl, combine the milk, drink mix, food coloring if desired, and salt; beat on high speed until blended. Place the cottage cheese and remaining water in a blender or food processor; cover and process until smooth. Add milk mixture and gelatin; cover and process until thickened.
Spoon into six 6-oz. custard cups. Cover and refrigerate for 1 hour. Spread with whipped topping; sprinkle with cracker crumbs.