1Prepare the orange, cherry and lime gelatins separately, dissolving each in 1 cup of boiling water and adding 1/2 cup of cold water. Pour each flavor into separate 8-inch square pans. Chill until firm, at least 3 hours. Cut into 1/2-inch cubes.
2Mix crumbs with butter, setting aside about 1/4 cup for garnish, and press remaining crumb mixture evenly over the bottem and up the sides within 1 inch from top of 9-inch springform or tube pan, and chill.
3Dissolve lemon gelatin and sugar in 1 cup boiling water; add pineapple juice. Chil until slightly thickened. Blend in the whipped topping. Fold in orange, cherry and lime jell-o cubes. Spoon into the crumb-lined pan and chill overnight or until firm.
4Just before serving run a spatula around sides of pan; then gently remove sides of pan. Garnish with reserved crumbs and whipped topping.