Covering area where old gas tank use to be 70C10

[B_town12]

I have a 70 C10 shortbed and put in factory bucket seats with center console. I relocated the gas tank and want to cover the area where the old tank was in the cab. I was thinking of using black carpet to match the carpet on the floor. But can't come up with something that would look nice.

So if any buddy could show some pics of what yoU did. Any pics would be appreciated. Thanks