Rainbow Jello Mold
["3 small pkg. Jell-O (assorted colors)", "1 1/2 c. heavy cream"]
["Preparing each color separately, pour Jell-O into a bowl and add one cup of boiling water; stir until Jell-O is dissolved, then add 1 1/2 cups of cold water.", "Stir for a few minutes, until Jell-O is cooled, then pour in 1/2 cup heavy cream."]
["O", "heavy cream"]