Preheat oven to 400.
In a small bowl, mix red sugar and 1 1/2 teaspoons of the cinnamon.
In another small bowl, mix green sugar and remaining 1 1/2 teaspoons cinnamon until combined.
In a large mixing bowl, beat together sugar, shortening, butter and eggs. Stir in flour, cream of tartar, baking soda and salt and mix until combined.
Roll dough into small inch balls.
Roll half iof the dough balls in green sugar-cinnamon mixture and the other half in the red sugar cinnamon mix.
Place about 2 inches apart on a cookie sheet.
Bake 8 to 10 minutes until bottoms are just lightly golden.
Cool 2 minutes on cookie sheet.
Remove from cookie sheet to a cooling rack to cool completely.