As best as I can recall it would be silver as the base color with dayglow bands. The pix I have seen of the restored on that pranged as Swartkos some yeasr back had the dayglow a little more reddish than the dayglow orrange that was on the SAAF Harvards.
It was not totally red, but not as orrange as the Harveads. As for the actual 1950's /60's era Helos in the SAAF, I cant tell with certainty as I have not seen colour pix of them, even then the colour in the pix may not nessesarly be as correct as in real life
I just took some artistic licence with this build. The dayglow would have faded quite fast anyway in the sun and very soon the areas especially on the top of the craft would turn into a light cream/yellow shade with orange blotches in it.
As for info n this particular craft, maybe check out the SAAF forum and join, Im sure somene there will know what you want to find out - http://www.saairforce.co.za/forum/index.php
Hope it helps
Theuns