It can take up to 18 months for the deep saturated coral base color to develop or fill in. Sometimes they all develop coral color, other times not. Even with Coral X Coral, in my limited experience, often there are a few to several which never develop heavy color. Males are typically more saturated then females in my experience.
I would not label any cornsnake a Coral until it meets my personal standard of what constitutes a "Coral".
I do not have psychic abilities, so am not going to answer if those are coral snows. Some seem to have some pinkish base color, but whether that color continues to develop or not, who knows :shrugs:
Camera flash, poor lighting, "yellow wavelength light", (or pink or blue wavelengths) will produce pictures with severely washed out color. Hence the pictures of the babies' parents looking like "regular snows".