Preheat oven to 350°F. Spray cavities with non-stick vegetable pan spray. In medium bowl, lightly beat sugar and eggs; beat in butter, milk, vanilla and icing color. Add flour and baking powder, mixing until smooth. Pour batter into cavities, filling one fourth full; place 1 1/2 candy bars length-wise down center of each loaf. Top candy with batter, filling each cavity half full. Bake 15-20 minutes or until loaves spring back when lightly touched. Cool on rack 5 minutes. Turn loaves out of pan; cool thoroughly. Heat ready-to-use decorator icing in disposable decorating bag in microwave at half power. Cut slit in end of bag and drizzle icing over loaf tops.