The red colour in tomato is due to pigment

The red colour of tomato is due to pigment Lycopene. It is produced in tomatoes from the carotenoid biosynthesis pathway.
Lycopene is a type of organic pigment called a carotenoid. It is related to beta-carotene and gives some vegetables and fruits (e.g., tomatoes) a red colour.
Lycopene is a powerful antioxidant with many health benefits, including sun protection, improved heart health and a lower risk of certain types of cancer. It may be most effective when consumed from lycopene-rich foods like tomatoes and other red or pink fruits.