The rules are rather straitforward
1 - There is no rule requiring addressing color to either teams helmets.
2 - The Visiting teams jerseys must be White. 1-5-1b(2)
3 - The Home teams jerseys must be a color other than White (effective 2021 must be a dark color that clearly contrasts to white) 1-5-1b(3)
So, in 2021 if one player on the home team had a dark blue jersey, another had a dark purple jersey and another had a dark red jersey,
we would kickoff at 7:00pm