Thanks Ash. I have heard of paint discolouring and the colour that's on the wall has in fact got yellower although it has a lot of yellow pigment anyway. I can see the advantage of the Keim paint re longevity and presumably I could do away with a water seal so am tempted to contact them for a colour chart but I am still totally baffled by the testers turning blue! I think I've got some white chalk paint lurking around somewhere so I may try going over the testers with that once it warms up a bit again and then retest the colours again to see if that makes a difference

As a company we specialise in providing 3D interior illustrations for interior designers. We can provide sketches or full renders dependent on the designers requirements when presenting the scheme. We have a background in interior design so understand the pressures designers are under and we are able to interpret the scheme from plans, elevations or even rough sketches. Our aim is to give the designer a professional presentation by return at a sensible fixed cost. Our unique selling point is that we don't charge per visual, we charge per room therefore within the fixed fee we produce a number of different views of the room to best illustrate it to the client. In addition to this we are happy to provide alternative colour schemes if required, again, within a fixed fee. This bathroom is a classic example of how alternative colour schemes can dramatically change the appearance of the room. The clients preference was for limestone but the interior designer wanted to present a clean black and white scheme to follow the modernist interior of the bedroom. We did both colour schemes to allow her to present her ideas....... www.3dinteriorillustration.co.uk - Tel Martin on 07931 525913

Please feel free to contact me with regards to your render, we work closely with a very good manufacturer of renders and would be happy to assist you and apply the render too. andrew@speraassociates.co.uk

I would like advice on how to paint an internal living room wall that has been taken back to the rendered scratch coat, circa 1947. This is to negate having the wall re-plastered and subsequently becoming a feature wall. What prep does it require & can I use the same interior emulsion that I would use on the other plastered walls? Thanks in advance. James