In microwavable safe bowl or coffee mug, microwave one color of candy melts and 1 Tablespoon shortening uncovered on Medium (50%) for 1 minute, stir. Continue microwaving for 15-second intervals, until melted; stirring in between until smooth. If candy is too thick, add a little more shortening.
Repeat with additional colors.
Dip the tip of 1 lollipop stick about 1/2 inch into any color of the melted candy and insert stick into 1 marshmallow about halfway, this will act like glue holding the marshmallow onto the lollipop stick. Repeat for each pop. Allow candy to harden, you can speed this up by placing them in the refrigerator about 3-5 minutes.
Once the marshmallow is secured to the stick, dip the marshmallow into the melted candy, covering the marshmallow completely, tap off excess.
Decorate with candy sprinkles, or add faces using piping bag (or melted candy added to a ziploc bag and cutting the tip off).
Let stand until set.