No Marine Ground is not restricted. Color vision waivers limit those to USN restricted line or USMC ground.
USNA is doing things different then we have seen in the past for color vision waivers. In the past they didn't grant waivers until they decided which candidtes would get the appointment, so it sort of all happened at once. So really none of us can speculate. The wait is hard for everyone. You will have waits your entire military career... which branch did you get, duty station, promotion, schools, command to name just a tiny few. They will only become more complicated as you will have a family, kids, career at stake and to coordinate. Learning to cope with this stress and wait is part of the learning curve. Hang in there. Good luck.