and then to shift the color values around in a non-linear mapping, just paste:

//  Modify color map index
  //#local NewIndex =  pow (NewIndex, 2);  // squared
  //#local NewIndex =  pow (NewIndex, 0.5);  // sqrt
  #local NewIndex =  sin (NewIndex * pi/2);



right below
#local NewIndex =  ReMap (Min, Max, 0, 1, OldIndex);

in macro FixColorMapArray.


Enjoy!

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