After trying 2 thousand different shades of grey on my living room wall and them all.looking.lilac 
I have just been to my local b&q which has a new Valspar mixing desk.
Along the wall of the colour charts there is an alcove where you can put your colour card in and check against natural light, fluorescent light and energy saving light.
The first few colours I picked all looked lilac in the energy saving light conpartment which is what my living room has.
Then I picked up Three Wishes 
True grey in all 3 lights, now I'm a chufty pants!
Has anyone else used this? Or Valspar paint? The lady said to me they have a scrubable matt, is this right?