I live in Sheffield and use them for my servicing so I contacted them first.....no help what-so-ever, as I said in my first post, they could only supply the body colour/code.
I actually purchased the car from Lexus Nottingham and they too have no idea of the colour code.
Last resort was to contact Lexus GB direct and guess what...same reply "Sorry no can help", it seems the colour was plucked off the Dulux colour chart and no-one cared to remember what it was called!
I could have the wheel refurbed, but obviously a small mark on the wheel as it has now is sure to be slightly better than an entire wheel that is a different shade to the other three.
Many thanks buddy for taking the time to reply-
Mark