You can colour your own fondant icing instead of buying separate packs, but you should only use gel or (in the case of black) powdered food colouring. A liquid colour will make the fondant too ...

Fondant is a type of icing that is made from sugar, water, gelatin, vegetable oil, and/or corn syrup. These come together to make something ... it’s easy to underestimate how good a good fondant ...