I remember TNG had that carpet and even ST5 had it too. In ST6, they had that deck plating which seemed more logical for a space ship. And deck plating is more "Spacey" to me. I think the utilitarian look of STAR WARS capital ships is one reason why I Love STAR WARS also. The Submarine look like on STAR TREK: ENTERPRISE is a great way to go, in my own opinion. But a civilian ship would have more luxurious materials, most likely for sale purposes. So, you seem to be correct in using that here.