colorful spots of paint on a concete wall of an old air defence bunker

abstract airdefencebunker architecture background backgroundpicture brightly bunker canvas cloudscape color colored colorful colorfully concrete concretewall curves darkgray decoration design graffiti grunge housewall intheabstract material old paint paints paper pattern peru retro rough rusty shadow smeared smears spotofpaint spotsofpaint sprayed stain stone stripes structures surface texture tranquil wall water waves wood