Re: black/white Johnson
I have a 1988 Johnson 110 and its white, I don't recall ever seeing a black 110 Johnson. I suppose it's possible that the current owner painted it. There were also some Tracker motors that had different paint and graphics than the regular motors but I don't know if Tracker ever offered a Johnson 110 version.
In case you didn't know, Tracker boats had motors from various manufacturers produced with their colors and graphics to match the boats that they were installed onto.
Either way, I'm sure it's the same motor under the paint.