Add an "attribute" section for the static templates/assets and allow the AWI download to pick specific files to download based on that attribute.
Using the Attribute portion of the Calculator Pricing Engine, I would think we should be able to provide an option for the customer to pick which color(s) they want from a single product template and only have the file associated with that color download when the order is placed. This availability would be beneficial in other ways as well such as allowing customers to mix & match different designs under a single product.