Every year in Spain, 20,000 people come together to participate in the world's largest tomato fight. It would have been fun if Heinz joined in the fun.

Plain white Heinz Ketchup shirts would be given out that only reveal their message when hit with tomatoes, thanks to hydrophobic technology.

Hidden messages would have been placed throughout the festival that activated as the food fight went on.

Heinz would have also created branded kits to help the tomato fighters have a little more fun.