wtf you dont even know how to add an sample event ?
function Me (thePlayer)
local players = getElementsByType("player")
for k,v in ipairs(players) do
if v == getLocalPlayer() then else
local r = getElementData(v,"red")
local g = getElementData(v,"green")
local b = getElementData(v,"blue")
setPlayerNametagColor ( thePlayer, r, g, b )
end
addEventHandler("onClientPlayerJoin", getRootElement(), Me)