Crown Jewel Cake

Years ago I found this recipe in the 'Canadian Kinette Cookery' cookbook. Our family loves this dessert and it is so pretty to serve.

1 85 gm (3 oz) pkg. each of orange,cherry and lime jello
3 cups boiling water
1 1/2 cups cold water
1 cup pineapple juice
1/4 cup sugar
1 pkg lemon jello(same size as above)
1/2 cup cold water
2 cups graham wafer crumbs
1/2 cup melted butter
2 envelopes Dream Whip

Prepare the first 3 pkgs of jello separately using 1 cup boiling water and 1/2 cup cold water for each. I pour the jello into loaf pans. Chill until firm and cut into cubes.
Combine pineapple juice and sugar, heat to boiling. Remove from heat and dissolve the lemon jello in it, add remaining cold water. Chill until syrupy..(texture of a raw egg white)
Meanwhile:
Mix the graham wafer crumbs with the melted butter. Press into an ungreased 9 by 11"pan, reserving 1/2 cup for garnish.
Prepare Dream Whip according to pkg and fold into syrupy lemon jello mixture. Gently mix in the jello cubes. Pour over the crumbs.
Garnish and chill for 8 hrs in fridge.