The 'Indigo Rose' is a new, strangely-colored variety of tomato. The fruit is jet black on the outside and juicy purple-red on the inside. These colors might not sound very appealing, but black tomatoes are supposed to be very tasty, and most importantly, rich in antioxidants. Indigo Rose is a cross-breed between red and purple tomatoes, and is the latest 'superfood' to hit the market.