Most people think of beets as the purple root vegetables, but that's just one variety. There are also sugar beets, which play a big role in table sugar production. Then there are more surprising members of the beet family, like chard, which has brightly colored stems. The beet's red color comes from betalin and stains absolutely everything it touches. Some people can't break this color down, so they will even pee purple and red if they eat beets!