abstract appearance artificial artistic artwork backgrounds coloring colors colouring colours crater crater-like dark image imaginary imagination imaginative kernel large large kernel large nut make-believe moon-surface simulation moonscape-like nut representation Somber sombre surface cucurbit grain pumpkin seed squash corn cob husk bean cereal corn food oats vegetable farm field flour plant wheat Anise spice bran chaff macro basmati rice brown rice rice dried nutshell pistachio pistachios pistazie shell snack