In medium saucepan, combine sugar, cocoa, cornstarch and salt; gradually stir in 2 cups skim milk.
Cook over medium heat, stirring constantly, until mixture boils; boil and stir 1 minute.
Remove from heat; blend in vegetable oil spread and 1 teaspoon vanilla.
Pour into medium bowl.
Press plastic wrap onto surface of pudding; refrigerate.
In small bowl, combine topping mix, remaining 1/2 cup cold skim milk and remaining 1/2 teaspoon vanilla; prepare according to package directions.
Fold 1/2 cup whipped topping into pudding.
Blend mint extract and red food color into remaining topping.
Alternately spoon chocolate pudding and mint whipped topping into parfait glasses.
Refrigerate.