I have a large room designed and decorated in the early 1960's. A product called tack board was used on much of the wall space. It has a fine burlap texture to it and does not show holes from thumb tacks. Now I want to remove or cover it to brighten the room (the material is very light absorbing.) Has anybody had success with painting or covering material like this? I would like to avoid taking the panels down and replacing them if possible.