Synthetic color for food that is alcohol-free with low fat and water-soluble. Ideal for food decoration, sweets, cakes, pickles, chicken, and home recipes. PTI Food Colour Green gives an intense tree green colour to icings and desserts. Use sparingly for pastel shades and larger quantities for intense green colour. Food coloring is a dye, pigment, or substance that imparts color when it is added to food or drink. Food colouring is used both in commercial food production and in domestic cooking.