abstract appearance backgrounds bark bumps close-up colors colours cracks edge edges layers patterns ridges rough shades of colour smooth strips surface surfaces texture textured textures tree tree-trunk trunk uneven variations varieties wallpaper wood brown tree trunk anchor arched architectural art-glass artistic artistry black color coloration colored colorful colour coloured colourful contrast craftsmanship dark decorative design designed Designs diamond-shaped diamond-shapes diamonds frame framed glass lead light lighting lines patterned perspectives rippled shade shades-of-colour shaped shapes stained-glass symbol symbolic window arches architecture building reflections stone-wall wall church