Ironically enough, this is the very question I was searching for an answer for. As a new leader, I'm glad to see I'm not the only one confused on the issue. I can see the argument for Cub leaders wearing RED like the Cub scouts, but overall I agree with the wearing of the new color numerals on the new uniform. Leaders are Leaders. There should be some universal standard.
For people that were complaining about the 'cost of new numbers', they're a $1.19 apiece. That's $3.57 for a standard 3 numeral Pack (i.e. 554). Is three and a half bucks really going to break the bank? Come on...
And for those who ordered the custom 3 digit patches in red, save them for the kids that join your group in the future. That way, they're not wasted. No loss.
I'm not a fan nor am I a member of the Uniform Police, but as new standards come along, we must adjust.
Were you the same people that complained when the BSA changed the Tiger program to where the Bobcat Badge was earned first?
Or when cyberbullying awareness was made part of the First Class Scout regiment?
Times change. We must change with them or be left behind.
Improvise. Adapt. Overcome.