How can I set all players team fifty fifty at once?

Hi. I am trying to make a code. When It's executed, It makes half of the players in red team, other half of the players in blue team. How can I do it?

Here is an example. (It's example only. It isn't working)

function setTeams()
	local firstHalf = someCode
	local secondHalf = someOtherCode
	for i, v in pairs(firstHalf) do
		v.TeamColor = BrickColor.new('Bright red')
		v:LoadCharacter()
	end
	for i, v in pairs(secondHalf) do
		v.TeamColor = BrickColor.new('Bright blue')
		v:LoadCharacter()
	end
end

As I said, It's just an example. It isn't working.

How can I do it?

I did it. It basically uses 1 variable.

local red = true
for i, v in pairs(game.Players:GetChildren()) do
	if red == true then
		v.TeamColor = BrickColor.new('Bright red')
		red = false
	elseif red == false then
		v.TeamColor = BrickColor.new('Bright blue')
		red = true
	end
	v:LoadCharacter()
end	

It simply does 1 red, 1 blue, 1 red, 1 blue .........

Thanks everybody.