sentences:  In contrast, "The Flintstones", while always produced in color, was broadcast in black-and-white for its first two seasons.The show was scheduled opposite "Walt Disney's Wonderful World of Color" and "Dennis the Menace" and didn't receive much attention; it was cancelled after one season and moved to Saturday mornings, where it was very successful.Following its primetime run, the show aired on Saturday mornings for decades, starting on ABC for the 1963–64 season and then on CBS and NBC.