backdrop background decay decaying dirty drips frame grunge industrial industry messy paint painted riveted rivets rough scratched caged clouds desktop enclosed fence grate grid metal sky structure structures texture textures trapped wallpaper abstract color colors colour colours grungy painting rust rustic rusty surface ancient art artwork colorful communication creativity design graffiti illustration pattern relic shapes sign symbols vector brown copy space cracked fill filler golden grain knot overlay shine weathered wood wooden colourful decoration decorative glass jewellery light pearls brush brushstroke brushstrokes pastel yellow blue dark irregular ripples shape