Wilton color is made to produce deeper, richer color by adding just a small amount. Our concentrated gel formula helps you achieve the exact shade you want without watering down your icing. You'll find a rainbow of colors, ready to blend together for creating your own custom shades. Certified Kosher. 1 oz. bottles. Note: Large amounts of Red-Red, Christmas Red, and Black may affect icing taste. Use No-Taste Red for large areas of red on a cake. When using Black, start with chocolate icing to limit the amount of color needed.