Food coloring has been used for centuries to enhance the appearance of foods. Some of the earliest known food colorings include saffron, turmeric, paprika, and carotenoids found naturally in foods like carrots, sweet potatoes, and tomatoes. However, it wasn't until the 19th century that synthetic food dyes began to be developed and used on a wider commercial scale. https://www.coherentmarketinsights.com/industry-reports/food-colors-market