Hiya, I have the van furniture one piece oak roof panel, I love it...also had the same in my previous van.
I need to revisit the fitting though where it meets the original front van headliner as it doesn't sit underneath the joining strip just buts up to it, think this is because it is cut from an 8 x4 sheet so is only just long enough. I need to add a bit across its length to fit under the joiner.
I also have silver mega van mats lining carpet it goes well with that too.