[Jony_Cruze]

pawn Код:

public OnPlayerSpawn(playerid)
{
    if(civilian(mode from your GM))
    {
        SetPlayerColor(playerid,COLOR_WHITE);
    }
    if(LSPD(mode from your GM))
    {
        SetPlayerColor(playerid,COLOR_BLUE);
    }
    return 1;
}

or you can put this on , OnPlayerConnect , don't forget to define the color on top of GM