They are red birds. You can call them production reds, but they sort of look to be "home made" as opposed to being from a hatchery, first generation, but that's just a guess.
Red Sex Links have lots of white in the feathers as they are a red/white mix.
True bred Rhode Island Reds are a deep, rich, mahogany color that is even and they have a brick shaped body type. These birds do not have either the features of an RSL or a true bred Rhode Island Red.