ちょっと遊び心のある灰色か、それともシンプルに黒か？
https://cdn.shopify.com/s/files/1/2804/9252/products/matsuda-eyewear-mxmf-grc-39-front_1600x.png?v=1634665279
https://cdn.shopify.com/s/files/1/2804/9252/products/matsuda-eyewear-mxmf-bkto-39-front_1600x.png?v=1634665268