abstract appearance background brown colored coloring colors coloured colouring colours conglomerate contours contrast contrasts cracks fissures flaws grit gritty layered layers levels light lines mica natural rock rock-face rockface rocky rough rugged shade shadows shape shapes silicate stone strata stratum sunlight sunny sunshine surfaces texture textured textures veins wallpaper shaped surface backdrop beam bracket building construction copy floor furniture grain graphic groove. grunge grungy hardwood hinge illustration industry iron knot knotted mahogany maple material medium merchant oak panel pattern pine plank polish red redwood space stain stripe timber tree vector wall walnut wood wooden blocks cracked solid split strength