abstract backdrop background brown brown-paper cardboard color colors colour colours paper sheet smooth storage strength strong surface surfaces texture textures tone tones appearance colored coloured grain grained panel rough textured uneven varnish varnished wall wallpaper wood wood-grain wooden exterior external pre-painting stained stains streaked streaks treatment water damage angles comfort gardening kneeling pad kneeling pad pattern patterned red synthetic synthetic rubber thick cold copyspace freeze freezing frozen roof tile tiles winter bark betula pendula bumps dashes deciduous gray grey raised short stripes silver birch silver birch tree tree tree trunk