Pomatums (Colouring and Scenting). Pomatums are seldom coloured of any other tint than red or pink; this is given by alkanet root, which has the peculiar property of imparting its colour to oils and melted fats, but not to water. Half a dracham of it may be coarsely powdered, and steeped in oil or melted tat until the Colour is extracted; this quantity will be sufficient to tint a pound of pomatum.