Appending more than one color to an array loop of colors

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Finally got this to work. Posting solution in case anyone else may be seeking how to add specific color(s) to a color array generated with a for loop, and then randomly shuffle.
And thank you @paulgoux!, your suggestions did help me think about this with fresh eyes. :slightly_smiling_face:

color [] getColorListShuffled() {

  color from = color (random(255), random(255), random(255));
  color to = color (random(255), random(255), random(255));
  float step = 1.0f / (cells.length-2);
  IntList inventory_1 = new IntList (cells.length);

  for (int k = 0; k < cells.length-2; k++) {
    inventory_1.set (k, lerpColor (from, to, k*step));
    
  }
  inventory_1.append(#000000); // add black to the array
  inventory_1.append(#ffffff); // add white to the array
  inventory_1.shuffle(); // all colors shuffled
  

  return inventory_1.array();
}
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