define ChatColor 0xFFFFFF // this is color of chat. Change it to what you need

OnPlayerText(playerid, text[])
{
        new PlayerName[MAX_PLAYER_NAME];
        new textin[1024];
        GetPlayerName(playerid, PlayerName, sizeof(PlayerName));
        format(textin, 1024, "%s(ID:%d): "ChatColor"%s", PlayerName, playerid, text);
        SendClientMessageToAll(GetPlayerColor(playerid), textin);
return 0;
}