After a series of hearings beginning in September 1949, the FCC found the RCA and CTI systems fraught with technical problems, inaccurate color reproduction, and expensive equipment, and so formally approved the CBS system as the U.S. color broadcasting standard on October 11, 1950. An unsuccessful lawsuit by RCA delayed the first commercial network broadcast in color until June 25, 1951, when a musical variety special titled simply "Premiere" was shown over a network of five East Coast CBS affiliates. Viewing was again restricted: the program could not be seen on black-and-white sets, and "Variety" estimated that only thirty prototype color receivers were available in the New York area. Regular color broadcasts began that same week with the daytime series "The World Is Yours" and "Modern Homemakers".