I think the seats look dirty because of the shade in the shot. I thought the same thing at first and then had a look again and they seamed ok.
With the compliance, if you can get them to use North Shore Prestige as he does a very good job.
I recently saw a M35 complied by one company, and when they put in the mounts for the baby seats, they drilled straight through the car to the outside and used a bracket on the outside of the car. It is not easily visible as it is hidden by the dust cover at the top of the tail gate but it leaked lots of water and looked very poor. To top it off they mounted the brackets on the removable trim at the top of the boot opening and put these huge holes through the plastic cover and it cracked when they tightened them up. It was the worst compliance job I have seen and ruined a really well specked car.
North Shore Prestige put the baby seat mounts in front of this trim and it is very neat.
Good luck.