Thank you, but I was expected to see all specter, not only one color (see
attachment).
Scene is following:
----------------------------------------------------
#include "jet.inc"
#include "hot.inc"
#include "winter.inc"
#include "parula.inc"
#include "turbo.inc"
#include "bone.inc"
#include "spring.inc"

global_settings { assumed_gamma 1 }

camera { perspective         angle 50
         location <8.50, 3.40, -8.50> * 5
         right x * image_width / image_height
         look_at <0.00, 0, -0.00>
         right  <-1.33, 0.00, 0.000> rotate<90,0,0>}

light_source{<50.0, 50.0, 30.0>rgb <0.80, 0.80, 0.80>}

sphere {
     <0,0,0>, 1
     pigment {
        gradient y
        color_map {spring}
     scale 2
     translate -1*y
     }
     scale 10
}
----------------------------------------------------

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Preview of image 'colormaps.png'