Blue:
In a medium saucepan, combine the sugar, cornstarch and salt. Mix well. Combine with water until smooth.
Bring to a boil; cook and stir until thickened, about 2 minutes.
Stir in Blue Berry gelatin until dissolved.
Stir blueberries and lemon juice into gelatin mixture spread over crust.
Chill until set. I put in freezer for an hour.
White:
Meanwhile, in a small bowl, beat cream cheese and confectioners' sugar until smooth.
Fold in whipped topping and vanilla; spread over blueberry layer.
Refrigerate until filling is set, about 2 hours
Red:
In a medium saucepan, combine the sugar, cornstarch and salt. Mix well.
Combine with water until smooth. Bring to a boil; cook and stir until thickened, about 2 minutes.
Stir in raspberry gelatin until dissolved.
Stir in raspberries.
Carefully spread raspberry mixture over cream cheese layer. Chill for at least 4-6 hours.