Yield: 8 servings (6 points per serving for blue, green and purple)
Preheat oven to 350 degrees F.
Add the graham cracker crumbs, yogurt and vanilla to a small mixing bowl. Stir until combined.
Spray a 9.5 inch pie pan with no-stick cooking spray. Pour the graham cracker mixture into the pie pan. Flatten the graham cracker crumbs and spread them out along the bottom of the pie pan (not up the sides).
Lightly spray the pie crust with the no-stick spray. Put in the oven for 5 minutes.
Add the cream cheese and key lime juice to a mixing bowl. Use a hand held mixer to blend until smooth. Add the Splenda and mix again.
Gently fold the Cool Whip into the cream cheese mixture. To not over stir.
Once the pie crust has cooled add the key lime pie filling to the pie crust. Cover with plastic wrap and refrigerate for at least 2 hours.