The park says it's making the change because of the cost and labor involved to maintain white fences as opposed to black. The park says it expects to save more than $50,000 a year by making the change.
Executive Director Jamie Link says white fence paint costs about three times as much as black paint and requires painting at least twice as often.
The fences have been white since the facility north of Lexington opened in 1978.
The park is changing about 30 miles of white plank fencing. But it says fencing directly around horse show rings will remain white for better visibility and safety purposes.