Timber windows can either be stained or painted. When painted the basecoats are usually applied by the fully dipped method and the finish is sprayed on. Paint types and finishes can vary, including micro-porous paints that enable the paint to move with the timber. Depending upon the location paint finishes can last from anywhere up to 15 years. The quality of stain used and the location will also have an effect on the life of the finish and the window. So, to answer the question, timber can be finished in a multitude of colours and finishes.