This situation is usually to determine the identity and status of the participants, so as to facilitate the communication and understanding of others.

According to Tencent. Different colors usually represent different identities and positions. Generally speaking, a signature card with a red background represents the identity of the owner or leader, because in the traditional culture of China, red represents authority, dignity and nobility. The foundation's signature card usually represents the identity of ordinary participants, because pink is gentle and soft, which conforms to the identity characteristics of ordinary employees.

Of course, the specific colors and usage rules should be decided according to the cultures and regulations of different companies and organizations. In a word, the signature card on the meeting table is to facilitate people's communication and understanding. Different colors represent different identities and positions, which is also a common etiquette and practice in business occasions.