Crashlander,

That seems to be an easy question for a difficult answer.

First speak about paint schemes of Taurus / Orion.
Remarkable of these scheme is, there are not two or more different colors on rudder, elevator or aileron and clear visible borders of the basic colors, no need to use masking tape over the hinge lines.
This is a situation I paint (spray) the parts separate to make it easy and to get a better layer of paint on the LE of aileron, rudder and elevator and TE of wing, fin and stab for rain protection.
Only the ailerons of the Orion with the complicated hinges did get a prepainted LE and the wing TE for protection and and are spray-painted after that mounted on the wings.

When repainting a plane as I did the Taurus twice, I do not disassemble the parts (also not to renew silk and dope on the stab).
The LE and TE ‘s of all the surfaces already do have a layer of paint, so are rain protected.

Modern schemes with a scheme that continues also with different (mixed?) colors on the ailerons, rudder and/or elevator maybe prefer to paint mounted all the parts together to get a better continuing of scheme and colors. Maybe I would paint the LE and TE’s with a basic color first and then mounting the parts together and complete the scheme for a good rain protection.

Cees