From the story:
"No, this isn’t Photoshop or a gemstone-studded trinket—just an ear of corn. Seedsman Greg Schoen of theSeeds Trust got this “Glass Gems” corn from his “corn-teacher,” a part-Cherokee man in his 80s."
"But kernel color is a fascinating—dare we say, colorful—topic in the annals of genetics research. For one, why are there so many vibrant colors in a single ear of corn? You don’t usually see flowers of different colors on a single tree."
That's right. Come for the corn, stay for the genetics.