Vampire coast units will come with 4 types of recruitment and graphic flavour. Contrary to other races, their colours and banners are not linked to the place where they are recruited, but by what faction recruit them.
Generic units can be recruited anywhere. They have less saturated / darker colours. They won't have banners
Raised units are recruited via raise dead. They have kind of blueish skin colours. They won't have banners.
"Ports" units can be recruited in any region, if there is a port in the province. They are a bit stronger, and have banners. They have more faction-colours in their clothing.
"Crew" units can only be recruited from the ship by the LL. They are strongers and have banners. They have more faction-coloured, and are more saturated/brigther.