I've selected some materials that might be useful. Materials suitable for the exterior (thick) ① Himeji Leather Oil Nume Black ② Himeji Leather Oil Nume Red ③ Himeji Leather Oil Nume Yellow ④ Himeji Leather Oil Nume Brown ⑤ Tochigi Leather Nume Natural ⑥ Cordovan Scrap Nume Natural ⑦ Milano Leather Nume Camel ⑧ Setouchi Leather Nume Brown ⑨ Setouchi Leather Nume Denim Pattern Embossed Green ⑩ Milano Leather Nume Black ⑪ Tochigi Leather FT Oil Black ⑫ Rugato Shoulder Nume Yellow ⑬ No Brand Nume Blue Green ⑭ No Brand Blue ⑮ No Brand Embossed Red Materials suitable for the interior (thin) ⑯ Rugato Shoulder Nume Green ⑰ Rugato Shoulder Nume Navy ⑱ Milano Leather Nume Camel ⑲ Tipo Leather Nume Yellow ⑳ Roroma Leather Nume Yellow 21 Roroma Leather Nume Black 22 Roroma Leather Nume Azure (Blue) 23 No Brand Nume Black 24 Tochigi Leather Nume Black 25 Tochigi Leather Nume Light Brown 26 Tochigi Leather Nume Yellow 27 No Brand Embossed Lemon 28 No Brand Embossed Pink The photos were taken under fluorescent lighting, so the colors may differ slightly from the actual materials. The Rugato Shoulder (⑯ and ⑰) is a glossy leather, so it reflects light and appears whitish. The Roroma Leather (⑳ to 21) has a waxy bloom on the surface, making it appear whitish. Especially the black and azure ones have a lot, so it's difficult to see their original colors. "Nume" indicates vegetable-tanned leather, while those without it are chrome-tanned or combination-tanned leather. Thank you for your consideration.