Colour, texture and different types of wood influence the final result. Planed wood appears lighter in colour than sawn wood. If the wood has darkened or yellowed over the years, lighter colours may look a little dirty due to the colour of the substrate.
There is a clear difference between one or two layers. Lighter shades will appear a lighter in final result after the second application, while darker shades will appear darker.
We all have our own individual way of writing, even when it comes to painting. Test painting in the desired colour, in consultation with the designer and the painter, is always the best way to get the desired end result.
Industrial painting is slightly different, as it is painted according to the required amount (g/sq. m) or by dipping.