What kind of customization are looking to do?
There is a lot that can be done with CSS.
The download box code is in the js/frontend.js file (in the plugin directory). Perhaps it can be changed to do what you need, however, one issue is that any changes there will be overwritten by updates. You may be able to hide the original download box with CSS and add your custom version by making your own frontend.js file.
Being able to select the background and border color would be sufficient for my needs
What you can do is add the following CSS code to the “Additional CSS” input box in your theme’s settings:
/* Global style for the PDF download box */
.wpcf7 .wpcf7-pdf-forms-response-output {
background: #fffbe6; /* change to your color */
border: 1px solid #f59e0b; /* change to your color */
color: #1f2937; /* text color */
padding: 1rem 1.25rem;
border-radius: 6px;
margin: 1rem 0;
}
/* Optional: style the link(s) inside the box */
.wpcf7 .wpcf7-pdf-forms-response-output a {
text-decoration: none;
font-weight: 600;
}
Change properties as needed.
That’s what I was looking for. Thank you very much.