/*void ActuatePart()
     * {
     *  currentPart.Actuate();
     * }*/

    public void ActuatePart <T>()
    {
        T    inst = forearm.GetComponent <T>();
        Part part = (Part)Convert.ChangeType(inst, typeof(T));

        part.Actuate();
        UpdateTipColor(part);
    }