Combine sugar, butter and whipping cream in large pan. Bring to boil. Boil for 4 minutes stirring constantly. Remove from heat. Mix in chocolate chips and marshmallow cream. Stir until melted. Set 1 cup aside. Pour remaining mixture into 9 x 9-inch dish. To the 1 cup of mixture, add orange extract, red and yellow food coloring, stir well. Drop on top of plain mixture and swirl with butter knife giving it a marbled effect. Refrigerate. When hardened, cut and enjoy.