Add image from gallery instead of main image to enquiry

Hello, I have products which are very different in design from one another, so to make it easy for the customer when requesting a quote, I wish to attach the currently open image (in the product gallery) to the enquiry form.

1) So let's say the user goes to a t-shirt product. There wlll be 8 images for t-shirts. One short-sleeve, one long-sleeve, etc. (they're the same product but with variables).

2) The user navigates to the long-sleeve shirt image within the gallery.

3) User clicks "Enquire about product" which sends this item to an enquiry list. What happens is this sends the Main image to the enquiry list.

What I want is for it to send the currently open image to the enquiry list. This is the only feature I am currently missing.