background black crease creases ductile folds leather light material pattern plastically shiny skin structure structures surface texture textures wrinkled abstract backdrop clear colorful colourful form glass glassy irregular pastel patterned patterning patterns plastic rippled ripples see-through semiopaque semitransparent shape shapes translucent translucid transparency aluminium aluminum blue color coloration colors colour colours decorative distinctive ductile-metal impressions interconnected interlinked metal metallic raised shaped sheet stippled style surfaced surfaces textured thick thin wallpaper