“Organic foods aren’t held with gloves. They’re a little bit more stressed out. The more stressed out your food is the brighter colors they’ll have because they’re producing these colors as a defense,” Sinclair explains.

Those bright colors, he adds, are indicators that the food has produced “xenohormesis molecules,” which activate our sirtuins that give our bodies an extra boost for longevity.

https://www.mindbodygreen.com/articles/3-easy-hacks-for-longevity-from-an-aging-microbiologist