Custom colours swatches for WordPress WYSIWYG

gistfile1.txt

/* ================== Custom colors swatches ======================== */
function my_mce4_options($init) {

  $custom_colours = '
      "496125", "Pounamu Green",
      "F4EDD4", "Whenua",
      "01AEF0", "Purū-pōuri",
      "305C7D", "Kōwhai",
      "EECE63", "Kōwhai 50%",
      "ADC6ED", "Ōrangitea",
      "F0DC9F", "Kārkitea",
      "899F47", "Whero",
      "444448", "Charcoal",
  ';

  // build colour grid default+custom colors
  $init['textcolor_map'] = '['.$custom_colours.']';

  // change the number of rows in the grid if the number of colors changes
  // 8 swatches per row
  $init['textcolor_rows'] = 1;

  return $init;
}
add_filter('tiny_mce_before_init', 'my_mce4_options');