By the time of the release of "Color of the Blues" in 1957, Jones had been releasing singles for three years and had scored four Top 10 hits: "Why Baby Why" (1955), "You Gotta Be My Baby" (1956), "Just One More" (1956), and "Don't Stop the Music" (1957). However, his three previous singles had failed to chart and, in the wake of Elvis Presley's explosion in popularity, he had even recorded a few half-hearted rockabilly sides with producer Pappy Daily. Jones was not discouraged, however, telling Ray Waddell of Billboard in a 2006 interview that he was just happy to have moved on from Starday Records: "When I went to Mercury I got my first halfway decent sounds. "Window [Up Above]" and "Color of the Blues" didn't sell that big, but they got me a lot of radio play."

"Color of the Blues" is considered one of Jones' greatest earlier works, and he often performed it live during the late 1950s. According to Rich Kienzle's liner notes of the 1994 Song retrospective The Essential George Jones: The Spirit of Country, Lawton Williams (who had composed Bobby Helms' 1957 honky-tonk smash "Fraulein") wrote the lyrics while Jones came up with the melody and title. Like many other honky-tonk tunes of the 1950s, Jones sings of self-pity over a failed relationship; his lover has sent him a letter in the mail written with blue ink on blue paper, leading him to declare that "blue must be the color of the blues." Like his earlier composition "Seasons of My Heart," the song contains vivid poetic imagery, with the color blue symbolizing his despair:

...
Wikipedia