1 can frozen limeade
1 can condensed milk
3/4 c. sour cream
8 oz. Cool Whip
Green food coloring
Pie crust
4 oz. chopped walnuts

Beat limeade in blender. Add condensed milk and whip. Add the sour cream and whip again. Fold in 1 or 2 drops of food coloring and half of the Cool Whip. Pour into browned, cooled pie crust. Spread remaining Cool Whip over top. Sprinkle nuts. Refrigerate until set firm.