A belated THANK YOU to everyone who commented. This is the final result. We're super happy with it. Room A north facing "through-lounge" in a new build, 3 bed semi detached house Paint Walls: Purbeck Stone, Farrow & Ball Ceiling: Strong White, Farrow & Ball By the way, the room isn't as long and skinny as it looks in the photos. Painting it all one colour actually made it feel much, much larger. We were really impressed with the quality of advice the F&B staff gave us in regards to colour. We loved Purbeck Stone from the minute we saw it, and being brave really paid off.

Do you like these? Take a look at the products page of Houzz, I'm sure you could find some inspirations. Good luck!

I don't know the exact paper but search for faux grasscloth, here's one. It could also be a silk effect, can't really see it that well (!) but Andrew Martin does one in marl which is a light grey http://www.wallpaperdirect.com/products/Eijffinger/Grasscloth-Light-Grey/111907?gclid=COrh3IP0gcwCFeQp0wodWt0I3A

https://www.worldofwallpaper.com/apex-geometric-wallpaper-rose-gold-fine-decor-fd41993.html?gclid=CjwKCAiAmvjRBRBlEiwAWFc1mGxH1P4d7iAUuityvxV1kuM3D2MjJIUrS9llPVr4tL2G9qzxIed9mRoCOCMQAvD_BwE https://www.grahambrown.com/uk/rose-gold-reflections-wallpaper/103290-master.html?src=pla_customers&campaign=Shopping+-+Best+Selling&gclid=CjwKCAiAmvjRBRBlEiwAWFc1mCmOG4uKuphUdFJpiO8pUpGZpit5kvgg7coRrz18V6j-AX3TPJwyoRoCllwQAvD_BwE&gclsrc=aw.ds