Definitely needs painting, since it's a gelcoat (on the fiberglass) issue, and won't stop once it starts. Common on lots of boats as well. Seems more of a problem as colors get darker, and it sure shows more on dark vs pure whilte.
Question them about what paint the intend to apply, some are not as good as others. I'd suggest an automotive paint for durability,, but am not experienced on painting fiberglass
Calgary, AB Canada