In a medium bowl, cream together corn syrup, butter and vanilla.
Beat in powdered sugar until smooth.
Place about a third of the mixture in a small bowl.
Add food coloring drop by drop until you've achieved the desired color.
Tightly cover both bowls and refrigerate for at least an hour.
Line two cookie sheets with wax or parchment paper.
Using a teaspoon and your hands, form balls out of yellow fondant and place on a cookie sheet.
Place cookie sheet in freezer.
Using a tablespoon and your hands, form white fondant into balls.
Flatten white balls into discs; place on cookie sheet.
If whites are still firm enough, you can go ahead and start filling them with the yellow centers. Otherwise, place sheet in freezer for a little bit until they firm up.
Place one white disc in the palm of your hand.
Drop a yellow ball into the center of the disc, and fold white around it.
Roll fondant into a larger ball and place on a cookie sheet.
Repeat with remaining fondant and place balls in freezer for another half hour.
In a double boiler or microwave, slowly melt together chocolate chips and shortening, stirring until completely smooth.*
Skewer a fondant ball with a toothpick and dip in chocolate, taking care to shake off any excess.
Place coated balls in refrigerator to harden fully.
Store in an airtight container in the refrigerator.