abstract appearance background brown colored coloring colors coloured colouring colours conglomerate contours contrast cracks fissures flaws layered layers levels light lines natural quartz rock rock-face rockface rocky rough seam seams shade shadows shape shaped shapes stone strata stratum sunlight sunny sunshine surface surfaces texture textured textures veins wallpaper breaking through contrasts cracked ribbons rugged shades of color shades of colour Cotswolds England english gray Great Britain grey old wall bricks construction grunge grungy urban close-up crack fissure granite grit gritty mica silicate boulder canada lichens nature plant Rocky Mountains clouds coastlines dark hills mountains rocks sky water design garden layout path patterns pebbles plants stones autumn blur eddy pools spray waterfall