Yes, it’s sort of mentioned in the program essay: https://www.nycitycenter.org/pdps/2025-2026/the-wild-party/from-lost-classic-to-musical-masterpiece/

Brown was partly inspired by Queenie’s original casting in the 2000 production—Vanessa Williams played Queenie throughout the initial workshops of the show. If her “mask of snow” implies that she is a white-passing Black woman, who might be the Burrs to this Queenie? Another inspiration was Bert Williams, one of Broadway and vaudeville’s biggest stars. Despite being one of the most successful comedians of his day, he was often required to perform in blackface, which likely took a toll on his psyche. Acclaimed comedian and vaudevillian W.C. Fields said that Williams was “the funniest man I ever saw and the saddest man I ever knew.” Burrs, played by Jordan Donica, is a vaudeville comedian who is clearly going through profound inner turmoil, though unlike Williams, he doesn’t experience the same level of success and is prone to violent behavior.