They would be a mix but perhaps some will be production reds, which is an undefined red productive bird. if you wish to call them that and if, if the chicks come out red that would be fine. They may be white with spots, black or red with black. You just never know. It is quite likely that the red sex link has a bunch of different bird in its background.
In no case would they be RIR. They're going to be a mix. The question is just what the mix looks like when they hatch.