Can Characteristic Selection trigger a javascript?

-- HikaShop version -- : 2.6.4
-- Joomla version -- : 3.6.2
-- PHP version -- : 5.6.16

I have Product which is made of three selected Option items within a packaging container (a Characteristic item which does not modify the price). The Customer normally selects which "Color" of container the product will use and then chooses the three component Options (each of which modifies the Product's price). After this, the Customer can select optional "Artwork" (a Custom Field also attached to this Product, which does not modify the price). My customer does maintain a stock of each container "Color", and would like to use HikaShop to keep track of them.

The difficulty is that not all "Artwork" is available for use on both "Colors" of container. I currently have a javascript snippet included in the custom "Artwork" field's definition which builds the option list based upon which "Color" Characteristic is currently selected. This works for a normal purchase until a customer decides to modify their "Color" Characteristic after they have selected "Artwork". I need to unselect the "Artwork" selection every time the "Color" Characteristic is modified.

I have examined HikaShop's editable Views and have not found a way to add an "onChange" attribute to the Characteristic drop-down input item, or to the "Add To Cart" button. It also appears that Custom Fields can only be attached to Product items, not Characteristic Items so I cannot provide different lists of "Artwork" to each Characteristic.

The javascript would be relatively simple if I could find the right place to add a trigger.

Do you have any suggestions?

Your suggestions work beautifully. Thanks!