A mixture of yellow, blue and red popcorn makes a healthy snack.

Red and blue popcorn kernels hold the highest antioxidant benefits of all the popcorn varieties.

Allan Hathaway, owner of The Purple Onion in Capitol Market, displays bins of recently harvested popcorn.

Toppings such as white cheddar, chili lime and kettle corn better adhere when tossed with popped corn that's been lightly spritzed with grape-seed oil.