abstract autumn background brown dez pain fall frame frames gritty grunge grungy leaf leaves ochre pattern shapes texture.textures textured xymonau art backdrop brushstrokes colors colours concept daubs decay design fill graphic old paint paintings pink smear spring summer texture white blue feather feathered iron metal metals oxide rust rusted rusting rusty steel structure tecture wheathered yellow structures textures violet wallpaper bump map diamond plate diamondplate industrial non-skid rough San Francisco sidewalk surface urban coarse non skid plate