Red tomatoes have lycopene (Plant nutrition) inside them which give them red color. This is the same nutrition which gives pink color to the other fruits such as watermelon and pink grapes. To know more facts visit <a href="https://www.techsite.io/p/1954116/t/tomato-growing-timings-john-deschauer">John Deschauer</a>, who is a Canadian farmer and expert tomato grower.