abstract appearance background cloth color colorful colors colour colourful colours creased creases decorative fabrics fashion feel folds light materials shadows soft tactile textiles textures thick thin touch yellow acadamic books cognition göttingen knowledge library public research student students study studying butterfly fly insect orange resting summer warming wings wood yellow-orange beach bed holiday ocean parasol pebbles sea sunbed swim umbrella vacation child eyes female girl glasses green happy model pose smile sunglasses woman anti aircraft army detection electromagnetic equipment military peace radar security war waves album antique book brown embossed gilded gold latch old photographs treasure vellum arch archway castle door entrance gate poor port relic wooden b blue g Nyberg pattern r red rgb texture tiles