Rainbow Jello

6 small pkgs of jello (flavors/collors of choice)
2 C sour cream

Dissolve one jello pkg with 1 c boiling water.   Divide mixture in half.  Add 1/3 c sour cream to 1/2 of the jellow mixture.   Pour sour cream mixture into bottom of 9x13 pan and refrigerate for approx. 1/2 hr.    Add 3 Tbls cold water on top of sour cream layer and then add remaining jello mixture.  Refrigerate for appox. 1/2 hr and then repeat with each pkg of jello.  Top with whip cream.