Unfortunately even Scott Bonnar (well Rover in this case) were not very consistent themselves with paint and decals over the years but here is what I believe is correct. I will dig up some photos later today.
Cylinder reel = Black
Clutch housing = Black
Drive shaft = Black
Drive shaft bearing housing = Black
Soleplate = Black
Reel bearing housing = Not painted
Clutch fork = Not painted
Front roller bracket and shaft assy = black
Front roller tube = Not painted
