abstract attached background color colored colors colour coloured colours combined connected distinctive grain grained grains marked marks nail-holes nailed nails old panelled panels planks rural rustic sandpapered smooth smoothed smoothen surface surfaces surfacing texture textured textures tooled wallpaper weathered wood wood-grained wood-work wooden board diagonal floorboard struchture structures used veined worn horizontal knothole knotholes shiny backdrop brown decoration decorative desktop hardwood natural structure vertical appearance blue clrean paint painted panel wood-grain plywood rough scratched scratches sheet surfaced