backdrop background colors colours hues paint paints paper papier series shades texture textures tones variation variations variety various watercolor watercolour block blocks canvas grid hue pastel pastels patchwork rough tint tints abstract arts blend gradient mosaic painting pattern squares blue cement cemented city color construction decay design exterior flat grunge grungy interior panel peeled urban wall blended colorful colourful connected connections contoured contours contrast contrasting decorative details interconnected interlaced interlinked intermeshed interwoven light multicoloured painted patterned patterns perspectives shape shaped shapes style surface surfaces surfacing swirling swirls textured thick thin vibrant wallpaper winged