Hi Jon,

In the Product Details module settings is a Custom Textbox Field. When enabled, a textbox will be displayed on the Product Details page. The user defined textbox is useful to customize your checkout and can be used to create any new field you choose. It is stored in the database for reference later on.

The Product Details module supports the following querystring variables:
* tbfield

To pass a value in the querystring to populate a custom textbox field on the product details page format your URL as follows:
http://www21.smith-consulting.com/Pro...

Passing the “tbfield” querystring will auto populate the product details page custom textbox field. To turn on the display of the product details page custom textbox field navigate to the product details module settings custom textbox field section and check the box titled “Show Custom Textbox".

In the release of SmithCart v.4.92 we also introduced the following new Product Variant Options which may suit your needs:

Variant Icons/Swatches - The ability to display a grid of variant icons/swatches. For example, if you are selling shirts this feature will allow you to define a set of "Color Swatches" and when the user clicks on one of the swatches the main product image will change to the color selected by the user

Dynamic product variant image options:
Add Border (Yes/No) – Adds or removes aborder around the image.
Background Color – Dynamically adds a background color on the main product image.
Text Color – Dynamically changes the text color of the text for a dynamic product image.
Text – Dynamically adds text entered in the html table cell of the image.

Hope this helps!