asphalt background diamond plate diamond-plate diamondplate grunge industrial metal non-skid Portland rough steel surface texture urban aged debris iron old oxide oxidized paint peel peeling rust rusted weathered abstract appearance blue color colored colors colour coloured colours inside interior internal Rendered rendering surfaced surfaces surfacing tactile textured textures uneven wall wallpaper ancient backdrop bark creation forest green grow growth lichen moss natural nature tree trunk wood Castanea chestnut cracked England english fissured Great Britain Sussex wild exterior external pre-painting stained stains streaked streaks treatment water damage canvas grungy hues rustic series shades tattered tones variations vintage worn