what's wrong with this simple loop script? (attempt to index a nil value)

this script checks every second for the torso color then prints their name with it

it works for some seconds but then it stops and gives me error at one of the lines 6, 11, 16

function func()


for _,v in pairs(game.Players:GetChildren()) do

if  v.Character:WaitForChild("Torso").BrickColor == BrickColor.new("Bright green") then -- attempt to index a nil value

print("Bright green: "..v.Name)
end

if  v.Character:WaitForChild("Torso").BrickColor == BrickColor.new("Flint")  then  -- attempt to index a nil value

print("Flint: "..v.Name)
end

if  v.Character:WaitForChild("Torso").BrickColor == BrickColor.new("New Yeller")  then -- attempt to index a nil value

print("New Yeller: "..v.Name)
end

end
end

while wait(1) do
func()
end