Mac Davis's second charting single as a vocalist was his own version of a song he'd written for Glen Campbell to sing on Norwood in a train car in the middle of the night - fully orchestrated but waking no one. "I'll Paint You a Song," with its rainbows and bluebirds, featured a comparable easy listening backdrop arranged by Artie Butler that laid the groundwork for Davis's forthcoming stream of crossover MOR-country hits. By 1972, his "Baby Don't Get Hooked on Me" would turn him into a multi-media figure in the mold of Campbell.
(In the late seventies a song came through my dad's Salt Lake City recording studio that turned into a familiar tearjearker for the Mormon church educational system. It was called "I'll Build You a Rainbow" and clearly used Davis's song as a template.)
Mac Davis - "I'll Paint You a Song"
See also: Chart Song Cinema: Norwood (1970)