You know you can buy red and orange tomatoes, but now purple is being added to the list. Purple tomatoes may be the healthiest of the bunch.
As you can see, these are not your typical tomatoes. Researchers in the United Kingdom borrowed two genes from the snapdragon flower, and implanted them in a typical tomato. Not only did the genes make the tomatoes turn a deep purple color, they also boosted the fruit's antioxidant level to three times higher than normal.
Then, researchers created a powder from the tomatoes and fed it to cancer prone mice. The researchers found the mice that had the powder lived longer than those that didn't. But more study is needed before you see purple tomatoes on store shelves.