background blocks Cornish cornwall cracked England english eroded erosion geology gray Great Britain grey layers natural nature rock sedimentary texture worn yellow broken orange abstract backdrop blue color colorful colorized colors driftwood grunge grungy old pattern red sea shore washed wood worn out art artist cmyk colored crayon creation creative design draft draw drawing hi-res illustration painting pencil pencils rgb vector alien black concept cool fill Fractal geometric original scrapbooking seamless Serpinski shapes squares style tile triangles white beams boards boardwalk corner dock join joint knothole lumber nail planks seam turn walk weathered wooden 3D arty border cage crimson frame grid industrial lines rectangle three d warp wire ancient antique architecture building city classic decay detail door element house paint peel rural shop urban village wall window abstract design concrete construction floor marble patterns gray slab stone surface textures urban texture