Prepare the red, orange, and green jello package separately as directed on the package using 1 cup boiling water and 1/2 cup cold water for each package. Pour them into individual shallow pans. Place in the refrigerator until firm. Prepare the lemon jello with 1 cup boiling water and 1/2 cup cold water and let set until it begins to thicken. Add the cool whip and then place in a bowl, 9x13 pan, or loaf pan. Cut the red, orange, and green jello into cubes and stir into the lemon jello mixture. Serve immediately or chill until ready to serve.