I am using the javascript card deck library available at this link : Deck-of-Cards.Js (github). How do I change the "card back image" of each card individually?

This screenshot shows the back of the cards, and that they are all set uniquely for each card: Back card and back class

This screenshot shows the front of the cards, and that they are different from each other: Front card

The back image of the cards is defined by default in the class: .card .back with the attribute background-image: url([faces/back.png][5]);

Is there any way to change this image of each "card back" individually using jquery or another Javascript Vanilla function?