1979 saw sponsorship change from John Player Special to Martini and Essex Petrolium, with the black livery moving to a more traditional British Racing Green. That was not the other change as Mario Andretti was joined by Carlos Reutemann. The close season also saw the rest of the field catching up on "ground effect". Lotus had been caught napping, and combined with the late arrival (and early departure) of the Lotus 80, the season was an uneventful one.
Doesn't quite have the same impact as the JPS livery does it?