By Carlos Alcalá, Sacramento Bee

The authors of the first-ever “Field Guide to California Agriculture” want people to think about where their food is coming from – and to think about it in new ways.

The guide, recently published by the University of California Press, opens with something that looks little like a field guide and nothing like agriculture.

A two-page spread shortly after the table of contents looks like nothing so much as an array of paint chips.

The grid of 160 little colored squares begins with what looks like an amethyst purple and ends with school-bus yellow.

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