Patriotic Trifle

Ingredients (10)

• 1 package (3 ounces) berry blue gelatin
• 1 package (3 ounces) strawberry gelatin
• 2 cups boiling water
• 1 cup cold water
• 2 cups cold milk
• 2 packages (3.4 ounces each) instant vanilla pudding mix
• 1 carton (8 ounces) frozen whipped topping, thawed, divided
• 1 pint fresh blueberries
• 1 quart fresh strawberries, quartered
• 1 prepared angel food cake (8 to 10 ounces), cut into 1-inch cubes