local blip

addEventHandler("onPlayerJoin",root,
function()
    local randomColor=math.random(1,255)
    blip=createBlipAttachedTo(source,0,2,randomColor,randomColor,randomColor,255)
end)

addEventHandler("onPlayerQuit",root,
function()
    if(isElement(blip))then destroyElement(blip) end
end)