backdrop background collage color colors colour colours grunge grungy paper rustic scrap scrapbook series tattered textures torn variations vintage worn abstract art canvas hue hues paint painting shade shades texture tone tones bleach cloth cotton cover design fabric fiber flax gauze line material mesh natural rough shabby textile thread threadbare tinge tint white woven bar bars building concrete construction corrosion grill grille heap iron pile reinforcement rust rusty stack steel structure wire wires