Why are the Xiaomi Buds 5 in black and gold easily covered with fingerprints?

The black and gold charging case are painted with a metallic finish, and the appearance is a reflective mirror, and residual fingerprints are obvious. It is recommended that you keep your hands clean and use soft fabrics such as glasses cloth, dust-free cloth, wet wipes, etc. to clean the surface of the Xiaomi Buds 5.