Do you ask to taste the beans in a bean soup recipe before you buy the beans? No, because you pretty much already have a sense of what beans taste like - it's just a matter of adjusting the situation around them to fully bring out their flavor.
The background generator is fun, but I do not see it as a real necessity to improve sales, unless the generator could take uploaded pictures of a specific interior, convert them to a sample room design on screen, where the buyer THEN could place the selected purchase consideration into his/her very own representation of his/her exact room décor.
A purchase does involve some effort on the part of a buyer. Do we eliminate all inklings of visualization from our potential customers?
If people are this needy, then my first instinct (maybe bad) is to avoid this sort of buyer.
I could actually see the generator causing losses of sales, because once a person sees a semblance of a picture hanging on the wall, this might be the impetus NOT to buy it, whereas if they had never seen this semblance, they might have bought it and dealt with it.
Maybe the ap should be for ARTISTS to create sample layouts to show to potential customers - a sample-room-design registry associated with each piece whose appearance WE control. On the page where all the items are listed and thumbnail pictured, there would then be another thumbnail to click on to show the piece in sample layouts, somehow automatically generated maybe.