Is there an easier way of scripting this? [lol]

Well I have 12 max players in my game and at a certain point I want to kill them all. It works, but is there a more efficient way of doing it? [Its not working atm...]

Here is my script:

game.Workspace.ChildAdded:connect(function(child) 

if child.Name == "KillAllPlayers" then
local pl = game.Players:GetChildren()
for i=1,#pl do
    if pl.Teamcolor == BrickColor.new("Bright red") 
        or pl.Teamcolor == BrickColor.new("Bright blue") then
            pl[i].Character.Humanoid.Health = 0
                end
for i=2,#pl do
    if pl.Teamcolor == BrickColor.new("Bright red") 
        or pl.Teamcolor == BrickColor.new("Bright blue") then
            pl[i].Character.Humanoid.Health = 0
                end
for i=3,#pl do
    if pl.Teamcolor == BrickColor.new("Bright red") 
        or pl.Teamcolor == BrickColor.new("Bright blue") then
            pl[i].Character.Humanoid.Health = 0
                end
for i=4,#pl do
    if pl.Teamcolor == BrickColor.new("Bright red") 
        or pl.Teamcolor == BrickColor.new("Bright blue") then
            pl[i].Character.Humanoid.Health = 0
                end
for i=5,#pl do
    if pl.Teamcolor == BrickColor.new("Bright red") 
        or pl.Teamcolor == BrickColor.new("Bright blue") then
            pl[i].Character.Humanoid.Health = 0
                end
for i=6,#pl do
    if pl.Teamcolor == BrickColor.new("Bright red") 
        or pl.Teamcolor == BrickColor.new("Bright blue") then
            pl[i].Character.Humanoid.Health = 0
                end
for i=7,#pl do
    if pl.Teamcolor == BrickColor.new("Bright red") 
        or pl.Teamcolor == BrickColor.new("Bright blue") then
            pl[i].Character.Humanoid.Health = 0
                end
for i=8,#pl do
    if pl.Teamcolor == BrickColor.new("Bright red") 
        or pl.Teamcolor == BrickColor.new("Bright blue") then
            pl[i].Character.Humanoid.Health = 0
                end
for i=9,#pl do
    if pl.Teamcolor == BrickColor.new("Bright red") 
        or pl.Teamcolor == BrickColor.new("Bright blue") then
            pl[i].Character.Humanoid.Health = 0
                end
for i=10,#pl do
    if pl.Teamcolor == BrickColor.new("Bright red") 
        or pl.Teamcolor == BrickColor.new("Bright blue") then
            pl[i].Character.Humanoid.Health = 0
                end
for i=11,#pl do
    if pl.Teamcolor == BrickColor.new("Bright red") 
        or pl.Teamcolor == BrickColor.new("Bright blue") then
            pl[i].Character.Humanoid.Health = 0
                end
for i=12,#pl do
    if pl.Teamcolor == BrickColor.new("Bright red") 
        or pl.Teamcolor == BrickColor.new("Bright blue") then
            pl[i].Character.Humanoid.Health = 0
                game.Workspace.HostageFree:Remove()
                end
            end
        end
    end
end
end
end
end
end
end
end 
end
end 
end
end)