We're not saying anything about this particular brand of Baking Tin. They appear to be very nice baking tins, and they look greyish or maybe a pewter tone. We're going by the picture, because the Baking Tin's product data says they have no color. 

Are they invisible, like Wonder Woman's plane? Or is it just that there were no associated color attributes for these products, because the baking tin's product data wasn't structured well? 

What if you were shopping for a certain color of cookware, for a gift? Think these baking tins would come up in your search?