Jeremy, I plan on painting a few of my unpainted Maseitai pieces too (for
home play use), though I plan on using alternate colors than the
*official* painted versions so that I can still tell them apart. The
'official' rare, painted Maseitai I would believe are the only pieces
legal to be doubled up (paired with an unpainted version) in your team.
It doesn't seem like there is any special marking to differentiate the
offically painted pieces versus the unpainted pieces, but there is an ID
number on every figure that seems like it can be used for this purpose.
So far the only 'official' painted playing pieces I have seen are the 14
Maseitai from the starter sets. Starter set pieces seem to have a
different set of ID numbers (52604), than the boosters (21704, 41704,
61704). Since unpainted Maseitai numbered 1-14 are not found in the
boosters, the rare, 'officially' painted Maseitai from Bandai will have
the set of ID numbers from booster pack pieces only.
Has anyone found Navia Dratp playing pieces with other ID numbers than the
ones I listed above? It would be nice to have a list of which ID numbers
occur in which formats (starter or booster packs) to help confirm if
pieces are officially painted by Bandai or painted by another player or
collector.