ZESTY LIME is a sharp, fresh lime green that will impress. (THE COLOUR OF THE POWDER IS DIFFERENT TO FINAL RESULT) - Lilly's colours are concentrated water soluble and approved food colouring powder. Colour your icing, plastic icing, candy floss, ice cream. Lilly's colours are simply beautiful and easy to use. - Every colour will give you a number of shades from light to darker as you add more of the powder.