Place the powdered sugar in a large, shallow container and set aside.
Place white chocolate chips in a medium mixing bowl.
In a small saucepan, melt the butter with the orange zest. Stir in the heavy cream and bring just before boiling. Stir in the orange extract, food coloring, and a pinch of salt.
Pour the hot cream mixture through a sieve over the chocolate chips. Stir until smooth.
Allow to cool slightly; cover and refrigerate until firm (about 1-2 hours), stirring occasionally.
Using a scoop, form the mixture into 1-inch balls. If sticky, dust hands with powdered sugar.
Roll the balls in powdered sugar to coat. Refrigerate for at least 30 minutes before serving.