abstract casing external firm hard hardy inside natural nature outside plants rough seedpods seeds shape shaped shapes shell Sizes smooth surface surfaced surfaces surfacing tactile texture textured textures two-sided variations woody wrinkled wrinkles appearance background blue color coloration colored colorful colour coloured colourful contours creased creases dark details distinctive drops light patterns perspectives skin style thick thin tipped tips vegetable visual wallpaper wet angles backdrop blended colors colours decoration decorative design detailed edges hide image images interconnected intermeshed interwoven lines patterned rhino rhinoceros wrinkly red vegetable-skin artificial-leather closeup coated covered covering feel finish grain leather leather-texture mottled raised soft touch green