Put sugar, cream and butter or margarine into a heavy cooking pot. Boil until it reaches the soft ball stage on a candy thermometer, about 5 minutes. Add Marshmallow Crème and chips. Mix well. Remove 1 cup of mixture and set aside.
Add orange flavoring and food colorings to mixture in pot. Stir and pour into greased 11 x 8-inch or 13 x 9-inch dish. Stir white mixture and pour on top, then swirl with a knife. Chill to cool. Cut into whatever size you desire.
