Wilton color is made to produce deeper, richer colors with just a small amount of dye. The concentrated gel formula helps you achieve the exact shade you want without thinning the icing. Certified Kosher. More Info: WILTON-Icing Colors. This plastic bottle contains 1 ounce of icing color gel. Made to produce deeper, richer colors by adding just a small amount of dye. The concentrated gel formula helps you achieve the exact shade you want without thinning the icing. Many colors available. Made in USA.