From Chapter 2- Popcorn Sutton: Master Moonshiner:

“It isn't surprising that Popcorn has attracted so much attention. His
slippery craft and his old-timey antics appeal to something in our
collective past. His overalls can be seen as the blue denim flag of old
pick-up trucks and cork-plugged clay jugs. His colorless hat is the nod
of a gentleman, ...