Model A's from Argentina were manufactured in the USA as RHD export.
It is likely the colours used were US colours, but maybe there were variations as occurred in ''foreign'' markets.
There is a large Model A Club based there, in B.A. called ''Friends of the Model A''.
I contacted them once & corresponded with an English speaking member concerning stamped body numbers ,if any [ no] but the Ford Plant there was large & they must have been assembling & painting, not just SKD as happened in small markets here in NZ.
You can Google Model A Club Argentina.