Interesting comments; Jules I have met you at Beltring and seen the work you did on the Fordson Radar Truck, so I know you researched your colours well, as does Tony Corbin who posts on here concerning the Fordson(s) he owns.
As for Canadian vehicles, Mike Starmer suggests as do other sources that these were produced in near enough matches of UK painting colours and changed around the same time as the British Army changed its colour schemes, so if you sand down to the base colour of a British or Canadian vehicle and find the ORIGINAL colour (not applied by a Post war Army) and use that as the match for a re-spray you can't get better than that.
Still I'm sure many thousand were in SCC 2 brown, so it does make you think why some from that period being restored now are painted in a colour nearer SCC 15 Olive Drab.
It sort of backs up Adrian's assertion that SCC2 is not a popular choice these days (with or without black or very dark brown so called Micky Mouse ear camo)?