My only suggestion would be contact Tiara Rv in Elkhart with your vin# & maybe they could help, but other than that I don't have a clue.
We had a buffet & a small cabinet with drawers custom built & the stain we used was a mixture of several colors til we got it close enough, but not 1 specific color.
As for the paneling, your idea of smart tiles would probably be the way to go. From my experience in repaniring/remodeling a rv once you start to demo it I found there's no where to stop.
Danny & Linda
Former '13 FB owner