The first one looks like Butter Motley hatchlings. If so, they'll probably develop a lot more yellow as they grow up.
The second looks like an Anery Stripe of some sort. If it's Anery A, it could develop a yellowish haze around the neck area as it gets older.
Your best bet is to contact the person who posted the pics originally and ask them. Most folks don't mind other people taking an interest in their animals - they wouldn't have posted the photos otherwise!
Even though you're looking for a hatchling, make sure you "window shop" for adults in advance to find what you're looking for. You don't want to buy something that will be exactly what you like for six months, then end up a different colour for the next 20+ years.