All american dessert

1. Dissolve each flavor of jello completely in 2 cups of boing water in separate bowls.
2. Stiri 1 cup of cold water into each bowl.
3. Pour into separate 9x13" pans.
4. Refrigerate at least 3 hours until firm.
5. Cut into ½" cubes.
6. Place blue jello cubes in bottom of clear glass trifle bowl.
7. Top with 1/3 of the cool whip.
8. Add cake cubes, then sliced strawberries.
9. Top with another 1/3 cool whip.
10. Add the red jello cubes and then the remaining cool whip.
11. Sprinkle blueberries over top if desired.