colourings

例句:

• Our range of herbal teas contain no preservatives, colourings or artificial flavourings.
  我们这一系列的药草茶不含防腐剂、色素以及人工调味品。
  
• Glass bottles are filled with water tinted with food colourings.
  玻璃瓶中盛满了被食用色素染过色的水。
  
• Despite its name, the species often produces individuals with abnormal colourings, including albinos and melanists.
  来自BBC