The afterword of Tom Robbins 4th (1984) novel Jitterbug Perfume, which treats of the quest for immortality is priceless - indigo, indigoing, indigone.
"The beet is the most intense of vegetables. The onion has as many pages as War and Peace, every one of which is poignant enough to make a strong man weep, but the various ivory parchments of the onion and the stinging green bookmark of the onion are quickly charred by belly juices and bowl bacteria. Only the beet departs the body the same color as it went in.
Beets consumed at dinner will, come morning, stock a toilet bowl of crimson fish, their hue attesting to beet's chromatic immunity to the powerful digestive acids and thoroughgoing microbes that cat turn the reddest pimento, the orangest carrot, the yellowest squash into a single disgusting shade of brown.
At birth we are red-faced, round, intense, pure. The crimson fire of universal consciousness burns in us. Gradually, however, we are devoured by parents, gulped by schools, chewed up by peers, swallowed by social institutions, wolfed by bad habits and gnawed by age' and by the time we have been digested, cow style, in those six stomachs, we emerge a single disgusting shade of brown.
The lesson of the beet, then, is this: hold on to your divine blush, your innate rosy magic, or end up brown. Once you're brown, you'll find that you're blue. As blue as indigo. And you know what that means.