Fascinating — as in hats. That was the sartorial message at Churchill Downs over Kentucky Derby weekend, when women showed a clear preference for fanciful fascinators over more traditional wide-brimmed hats. They were the event’s crown jewel accessory, most accented with feathers and flowers, topping off colorful dresses and heels. As for the gents, they opted for Southern Dandy style: candy-colors, seersuckers, pocket squares and bow ties. As the rain started on Saturday, some of the cocktail chapeaus wilted a bit. Not so the mint juleps.