We have a home under construction and the walls are knotty pine. Our goal was to have deep rich pine walls and the architect said they would use linseed oil and the walls which are now very light would darken quickly He said within three years we would have the mellow rich wood look we want. Now the painter tells us that they used an acrylic sealer on the walls and that it will take years for the wood to change color. The architect tells us the acrylic won't matter and they will still darken rapidly. Who is right?