Lightly grease cookie sheets
Insert craft sticks into whole, stemmed apples
In a medium saucepan over medium-high heat, combine sugar, corn syrup and water
Heat to 300 to 310 degrees F (149 to 154 degrees C), or until a small amount of syrup dropped into cold water forms hard, brittle threads
Remove from heat and stir in food coloring
Holding apple by its stick, dip in syrup and remove and turn to coat evenly
Place on prepared sheets to harden