Arjen, Thanks for your reply.
You are correct that we're not looking to rank for images of Formica samples (or any of our other samples for that matter), in fact we're just providing the sample images to help our clients better decide which one of our products to order. The sample tiles are just a means to an end.
Do you have any knowledge as to the extent to which Google can "see" an image the same way a human user sees an image? Does Google just rely on the alt text that that you provide them with?
Thanks in advance,
Scott