It wasn’t clear what caused a color mix-up in Lexington’s Triangle Park fountain Wednesday, but the bright red water generated plenty of discussion throughout the day.

The water was supposed to be dyed pink to promote the free showing of the film Pretty in Pink at the park at dusk Friday, part of Downtown Lexington Corp.’s new Fountain Films on Friday series. It was also a nod to the film’s sponsor, Susan G. Komen for the Cure.

Fifty-six gallons of pink dye were used in the 55,000-­gallon fountain, in line with the ­recommended one gallon of dye per 1,000 gallons of ­water, ­Downtown Lexington Corp. ­president Renee Jackson said. She was working Wednesday evening to have the red water diluted to pink.

Pretty in Pink is the first of eight films scheduled for every other Friday through August.