MIX cookie crumbs and butter; press onto bottom and 1 inch up side of 9-inch springform pan.
ADD boiling water to gelatin mix; stir 2 min. until completely dissolved. Refrigerate 30 min. or until thickened.
BEAT pudding mix and milk with whisk 2 min. Stir in thickened gelatin and 1 cup COOL WHIP; spoon into crust. Refrigerate 4 hours.
TINT remaining COOL WHIP with food coloring; spread over gelatin layer to within 1 inch of edge. Decorate with candies and decorating gel to resemble a pumpkin patch.