The fries were the small value size and came with packages of green ketchup, or, as Heinz called it, St. Paddy's Sauce.
The green ketchup didn't taste any different from regular ketchup so it was probably just food coloring. But it felt festive for the holiday.
If you happen to pass by a Burger King this weekend, stop in for the free fries! We don't go to Burger King that often... but free is free!