There are quite a few breeding Northerns in the US, however babies generally aren't available this early in the year and litters are small, so the waiting lists fill up fast! Indos generally are still WC or "Farm Bred" and imported from out of the country, so that is why you will see a lot of indo babies for sale, people are trying to breed them, but it is a hard process to get them adapted, I have been trying to breed my IJs (both presumed to be WC) for 2 years now and no luck. So finding a northern that is not the "normal" coloration may be a challenge, you will generally see babies available around spring and they sell quick, I'm talking within a few days (especially the northerns). LLL reptile is breeding their own Blueys now, so they may have some babies pop up in spring time, but I don't know if they have any Northern Color variations, they did have some Indo color variations though, so if they successfully locked up there may be a source there, if they don't get held back.