Why are the electronic social security cards given by family members in color and their own in black and white?

The classification is different. The electronic social security cards given by family members are in color, and their own are set in black and white by relevant departments. Due to different classifications, social security cards are called social security cards of the People's Republic of China, and are issued by local human resources and social security departments for the whole society. It is an integrated circuit card used in various business fields of human resources and social security.