blue or dark-blue wall, texture, background. the building wall, painted with water-based paint. pale (flat) surface

blue wall texture background surface old architecture backdrop shaded contrasting block cement building construction concrete technology facade grunge retro vintage stone wallpaper lightblue abstraction pattern whitewash lactic fence fencing plain unevenness glassy waterbased painted paint smooth flat bluish gradient exterior sapphirine design sky decorative saturated deep interior unsmooth strokes dark-blue water-based pale soft color small dents background paint