Preheat oven to 350 degrees F. In a medium size bowl, cream together shortening and sugar. Add eggs, milk, vanilla, lemon juice and food coloring and mix well. In a separate bowl, mix the dry ingredients (flour, cocoa powder, baking powder, and salt). Slowly mix dry ingredients into the wet mixture until you form a large dough ball--don't overmix. Refrigerate for 30 minutes. Lightly flour your counter top. Roll dough ball out until 1/2 inch to 3/4 inch thick. Cut the dough into shapes using a cookie cutter. Place cookies on a lightly greased cookie sheet. Bake at 350 degrees for about 8-10 minutes. Cookies should still be soft when you take them out, but not doughy. (Don’t overcook or they will be hard!) Allow to cool and frost once cooled. For the frosting: Cream together butter and creamy cheese until smooth and light. Add vanilla and mix. Add enough powdered sugar to reach a good frosting consistency.