Elon Musk says Twitter to launch gold, grey checks alongside blue verified mark. "Gold check for companies, grey check for governments, blue for individuals (celebrities or not). Painful, but necessary," Musk said in a tweet. Elon Musk says Twitter will begin manually authenticating Blue, Grey, and Gold accounts as soon as next week. According to Elon: "Gold check for companies, grey check for government, blue for individuals (celebrity or not) and all verified accounts will be manually authenticated before check activates."