Celtics do not need anything other than their home white and away green.
The black alternates are fine. I liked the St. Patty’s Day jerseys back in ~2008. But all these new Nike city/heritage/whatever jerseys are very un-Celtics-like.
Celtics jerseys should be held in the same regard as Yankees jerseys. Classic, understated, timeless. They don’t need their jerseys jazzed up to sell. Just win.