Thanks for the replies it seems that there is a British Standard for paint colours, which allows matching across different materials. Pearl grey/ Swansdown is BS 4800/5252 22 B 15, although the monitor colour is not very good. http://www.e-paint.co.uk/colours_included.asp?pName=BS 5252 fan&pRange=5&pLargeImage=images/BS 5252_small (2).jpg So I will try the local paint place where I get my Zinsser :) best water based white paint I have used, ever. They do both Haymes and Porters paints so will hopefully not just roll their eyes. Really should have taken a picture of it, a warm pale blue grey does not make sense, but was in a very high spec house.

Hi Suzineedsahouse, What are you painting? Inside, outside? What's the style of your home? What kind of a look are you trying to achieve? Modern, classic, Tuscan? Other? Let me know and I'd be thrilled to help you out.

I received a very quick email response from the company which I have copied and pasted below which you will see, they DO NOT RECOMMEND this product for internal application. "Thank you for visiting the Cabot's Premium Products website and for taking the time to send us an email. We do not recommend this product for your internal application . However, once the stain has cured therefore no odour present there should not be any issues with performance or safety. Please do allow extended curing in cold or humid conditions as it may take several days to fully cure." Certainly appreciate their quick response and everyone's help here on houzz. Will have to take time out to get to a larger hardware store (the joys of renovating in a country area) ;-)

It looks as if the area is in permanent shadow, but even if it's not, I would opt for a sandstone/pale honey colour. Something that reflects the light and also gives warmth to an otherwise very cool area. A couple of planters would also look good - even if you have to opt for faux plants in a sunless area!