A character appearance script?

This can be easily be done:

game.Players.PlayerAdded:connect(function(plr)
	plr.CharacterAdded:connect(function(char)
		plr.Changed:connect(function()
			if plr.Team == "TeamRed" then -- It can also be done by "plr.Team == game.Teams.TeamRed"
				char.Head.BrickColor = BrickColor.Red()
			elseif plr.Team == "TeamBlue" then -- It can also be done by "plr.Team == game.Teams.TeamBlue"
				char.Head.BrickColor = BrickColor.Blue()
			end
		end)
	end)
end)