I use a variety of Floquil colours to represent the SAR in this period. Typically the colours that I use are: Reefer Grey or SP Lark Dark Grey. You can also use Humbrol paints, typically No. 27, 66 or 67 are a good approximation of this periods colours. Remember that chassis and bogies in this period were painted black, so there is a lot more work to paint wagons in this period compared to post 1964.
Number boards at this stage were white lettering on this dark grey background and many wagons had a white S.A.R. added to their side as partial identification of the parent system.
During this period some sealed doors were painted yellow. For this use either Humbrol 24 or 69, or Floquil Reefer Yellow.
Insulated vans were white and later silver, I haven't ascertained the changeover date .
Horse wagons were a red/brown colour and some were painted Hawthorne Green. For the green use Humbrol 3.
Not all wagons were painted light grey in 1964, but this is when the SAR started to paint its wagons light grey as they went through the paint shop. The colours that I like to use for this period forward are: Humbrol number 64, or Floquil S. P. Lettering Grey or Floquil Grey Primer.
Number boards were typically black with white lettering, and the system identification became a red or black piping shrike in most instances, although a red SA also appeared in a red outlined box on some wagons.
During this period sealed doors were painted red. Use Humbrol 19 or 60.
Some wagons during this period were also painter yellow, the OC and SOC as an example, use either Humbrol 24 or 69, or Floquil Reefer Yellow.
Green and Cream Passenger Stock (Steel Cars and Centenary Cars)
For the cream use Humbrol 103 or Humbrol 7. For the green use Humbrol 3. The roofs of these wagons were black but a plain black often looks too stark, use a mix of Floquil Black through to Grimy Black for aged roofs.
Later in their life the Steel cars were painted in the same colour scheme as the early diesels, a colour known as Regal Red, for this I use AR Kits red with some black added or you can use 50% floquil Box Car Red and 50% floquil Caboose Red. The silver is Floquil Bright Silver. The roofs of these wagons were black but a plain black often looks too stark, use a mix of Floquil Black through to Grimy Black for aged roofs. Some of these cars also had a silver roof at various stages of their life.
These vans were painted a red/brown which over time faded to a mostly brown. Use Floquil SO Freight Car Brown for that faded look and add some red (Floquil Caboose Red) for a newer look van.
Use Steam Era Passenger Car Red or Humbrol 19. The roofs were either a Tan or black depending on the period of use.
Use AR Kits Red, add other colours to represent the faded look.
Suburban Cars and Red Hens.
A 50/50 mixture of Floquil Boxcar Red (110074) and Floquil Caboose Red (110020) or for a more weathered try either Floquil Oxide Red (110186) or use Humbrol 70.
Use Floquil Engine Black or Steam Era Models Engine Black. Buffer beams on SAR Locomotives were at different periods black, silver and red. For the red use Humbrol 19.
The 900, 930, 600,700 and a few 830 diesels had a colour known as Regal Red, for this I use AR Kits red with some black added or you can use 50% floquil Box Car Red and 50% floquil Caboose Red. The silver is Floquil Bright Silver.
The 830, 350, 800 and some 600 and 700 class diesels were painted in a set of colours known as mustard pot. For the yellow use Floquil UP light orange F110168 or a mixture of Humbrol yellow (24) and humbrol orange (82) in a ratio of 6:1. The waist band is Regal Red described above or use Humbrol leather (62) or Humbrol red leather (180) for a faded look.