In a large bowl, cream the shortening and confectioners sugar until light and fluffy, beat in the egg and extract. Add flour and salt; mix well. Divide dough; place 3/4 dough in a medium bowl, place 1/4 dough in a small bowl, tint 3/4 batter with green food coloring, mix well. Cover and chill both bowls for 1 hour or until dough is easy to handle

On a lightly floured surface, mix the tinted and plain dough together to make a swirl effect when dough is rolled to 1/4 inch thickness, cut with a floured round 2 inch cookie cutter. Place 1 inch apart on ungreased baking sheets.

Bake at 375º for 10 to 12 minutes or until edges are lightly browned. Cool for 1 minute before removing to wire racks, cool cookies.

Melt chocolate chips in microwave on high for 40 seconds or until melted, stir.

Dip one side of cookie in melted chocolate, sprinkle with colored sugar.

Place on wire rack until chocolate is set.

How to make colored sugar.

1/3 cup sugar

2 or 3 drops green food coloring or color of your choice

Place sugar in a small bowl, add food coloring, one drop at a time mixing well after each addition, until you reach desired color.