How to change a players team?

i have a script that selects one person to be a killer and the rest to be runners. I need it so once the killer has been selected it changes their team to bright red and once the runners have been selected to change their team to bright blue.

Script That needs editing:

players = game.Players:GetChildren() 
randomp = players[math.random(#players)]
print(randomp.Name .. " is killer")
game.Player.TeamColor = "Bright red";
for i,v in pairs(players)  do 
	if v.Name ~= randomp.Name then
        	print(v.Name .. " is runner")
		game.Players.TeamColor = "Bright blue";
    	end
end