No clue, I'm afraid. Maybe @Armada, @Hylie Pistof or even @Captain Armstrong would have a better idea.Do you have any idea what colours Dutch ships were painted in the late 18th and early 19th century?
I think there is some measure of sharing between Portugal and Holland going on already, so I have no objections there.Otherwise I'm half inclined to do the Portuguese versions of both "Greyhound" and "Surprise" and let the Dutch share those.
The question is always of what we actually need vs. file size.If I do create the Portuguese versions, I won't bother adding new interface pictures - the Portuguese texture is close enough to the British one that they can share interface pictures and not take up more of the rather limited free space still remaining in the interface picture files. US versions, on the other hand, will look different and require new interface pictures. If this goes on much longer we're going to need a fifth interface picture file...
As far as I'm concerned, anything that isn't unique enough, can be kicked out from the mod. We've done that before and removed 50+ ship models, if I recall.
On the other hand, if we do need another one for good reason, I see no problem with adding it. Shame about the download size; but the mod download size is already silly anyway.
Yet still not as silly as some AoP mods, because at least on PotC I've been trying to make a "clever" installer and use texture compression to keep things (at least somewhat) in check.