COLOR

          [DISPLAY\]COLOR HueRange [HueZero HueExtent]

    Select a color Look-up-Table so that the color at value  Zero  is  given  by
    HueZero  (in  range [0,360[), and the overall HUE extent is HueExtent (which
    can be larger than 360).  HueRange (in the same units) indicate  a  part  of
    the  LUT which  becomes progressively whiter (less saturation, HueRange < 0)
    or darker (less intensity, HueRange > 0) around the colour HueZero.

    Such LUTs allow to outline the Signal-containing  regions  compared  to  the
    noise level, either in bright (HueRange < 0) or dark (HueRange > 0) modes.