Songfacts®:

• Along with "Who Am I" and "When the World's at Peace," this was one of three songs that the team of Bunny Sigler and Phil Hurtt wrote for the Back Stabbers. Sigler and Hurtt worked out of Philadelphia International Records, writing, producing and singing backup for Joe Simon, Jackie Moore, The Stylistics and many other acts. In a Songfacts interview with Phil Hurtt, he talked about writing the lyric for "Sunshine":
  
  "A lot of times when I'm trying to come up with a lyric or a feel, I write something that I would like to say, something I'm looking for. I can go into my imagination and imagine this person, this woman in my own life, and what I would say to her. When I was in the service in Alaska I would write letters for my friends to their girls, and these guys would always receive these tremendous accolades for their letters I had written: 'Oh, my wife was so happy that I said that.'
  
  So carrying that forward, when I started writing lyrics, I did the same thing. I'd go back into myself, my inner self, and imagine what I would say. So when I say, 'You're the sweetest thing I know, you dim the rainbow's glow. There's no power on this earth that would separate us,' that's where I am."
• In 1974, a live version was released as "Sunshine (Part II)," which is the version that charted at #48 in America. It was extracted from their album The O'Jays Live in London.