In a small mixing bowl combine butter and corn syrup. Add 2 c. confectioners' sugar and extract; beat well. Stir in 1 c. confectioners' sugar. Turn out on a work surface sprinkled with confectioners' sugar; knead until sugar is absorbed and smooth.
Divide the candy dough into as many different colors that you desire. Add 2 drops of the desired color and work into the dough. Shape into 3/4" balls; roll in grandulated sugar. Flatten with a fork. If you are using a candy mold, follow the same steps, except you will press gently into the mold after rolling in sugar and you will not press with the fork.
Let stand, uncovered at room temp for 1 day. Store in an airtight container.
You can also separate the mixture and add the separate flavors and food coloring...i.e. red for peppermint...green for spearmint. Or if you prefer one flavor..you can still separate so you can have an array of colors. Next we rolled them in a long tubular shape and rolled waxpaper around the tube..then refrigerated until chilled and cut using bakers string or a slim sharp knife.