How do I change teams?

Recreating an ancient game, need some assistance with the following script.

local tcName = "Really blue" --TeamColor name
local player = game.Players.LocalPlayer
script.Parent.MouseButton1Down:connect(function()
    player.TeamColor = tcName
end)

Trying to get it so that the tcName variable would set the players TeamColor to the following string (The TeamColor), but the output says that the Teamcolor value is invalid when trying.