[…]
The choice is of course arbitrary, but during this catalog project, would it
be wise to adapt to LDraw's (and thus Studio's) choice?
+1
IIRC, LDraw’s rationale was that the upper part is a sleeve, so the main colour
is the one used on the lower part: the arm (and hand) is yellow with a blue/red/white/…
(short) sleeve.
The choice is of course arbitrary, but during this catalog project, would it
be wise to adapt to LDraw's (and thus Studio's) choice?
I've always thought it should be reversed, as most arms base would be either
yellow or flesh, therefore limiting the amount of catelog entries drastically.