Generate Switch Images for Magento

gistfile1.php

<?php
/**
 * Generate Switch Images for Magento
 * cp out/* media/wysiwyg/swatches
 */
$x = 21;
$y = 21;
$colors = array(
    'Lemon yellow' => '#FFE500',
    'Sunflower yellow' => '#FFAE00',
    'Orange' => '#F86A00',
    'Red' => '#D9161A',
    'Medium red' => '#AD0019',
    'Burgundy' => '#7B1E22',
    'Magnolia' => '#A52E5F',
    'Dahlia pink' => '#FEA096',
    'Antique violet' => '#B09086',
    'Bishop purple' => '#5B4866',
    'Light blue' => '#62AABD',
    'Sky blue' => '#0090B9',
    'medium blue' => '#186CA7',
    'Royal blue' => '#333572',
    'Blue grey' => '#44515C',
    'Pastel turquoise' => '#668779',
    'Lagoon blue' => '#A7C6AD',
    'Green yellow' => '#DAE043',
    'Spring Green' => '#23A01B',
    'Pesto' => '#647946',
    'Oasis' => '#A9A042',
    'Dark Green' => '#005332',
    'Bahamas bue' => '#005E62',
    'Turquoise blue' => '#00918F',
    'Water Lily' => '#B2D574',
    'Beige' => '#F2CE8F',
    'Mocha' => '#BA9668',
    'Silk grey' => '#AE9A75',
    'Sepia brown' => '#5A4533',
    'Chocolate brown' => '#5F412A',
    'Pearl grey' => '#CDC2A5',
    'Medium grey' => '#9F9680',
    'Graphite' => '#605E52',
    'Black' => '#000000',
    'Blanc antique' => '#F6E1B8',
    'Blanc' => '#ffffff',
    'Silver' => '#A49C89',
    'Gold' => '#A3894B'
);

/**
 * Make color from hexa
 *
 * @param $im  image
 * @param $hex hexa
 *
 * @return int
 */
function hexColorAllocate($im, $hex) {
    $hex = ltrim($hex, '#');
    $a = hexdec(substr($hex, 0, 2));
    $b = hexdec(substr($hex, 2, 2));
    $c = hexdec(substr($hex, 4, 2));
    return imagecolorallocate($im, $a, $b, $c);
}

/**
 * Make Name Magento Switch friendly
 *
 * @param $color
 *
 * @return string
 */
function makeName($color) {
    $carac = array(
        'À' => 'a', 'Á' => 'a', 'Â' => 'a', 'Ä' => 'a', 'à' => 'a', 'á' => 'a', 'â' => 'a', 'ä' => 'a', '@' => 'a',
        'È' => 'e', 'É' => 'e', 'Ê' => 'e', 'Ë' => 'e', 'è' => 'e', 'é' => 'e', 'ê' => 'e', 'ë' => 'e', '€' => 'e',
        'Ì' => 'i', 'Í' => 'i', 'Î' => 'i', 'Ï' => 'i', 'ì' => 'i', 'í' => 'i', 'î' => 'i', 'ï' => 'i',
        'Ò' => 'o', 'Ó' => 'o', 'Ô' => 'o', 'Ö' => 'o', 'ò' => 'o', 'ó' => 'o', 'ô' => 'o', 'ö' => 'o',
        'Ù' => 'u', 'Ú' => 'u', 'Û' => 'u', 'Ü' => 'u', 'ù' => 'u', 'ú' => 'u', 'û' => 'u', 'ü' => 'u', 'µ' => 'u',
        'Œ' => 'oe', 'œ' => 'oe',
        '$' => 's');

    $str = strtr($color, $carac);
    $str = preg_replace('#[^A-Za-z0-9]+#', '-', $str);

    return strtolower($str);
}

// Work
foreach ($colors as $color => $hexa) {
    $img = imagecreatetruecolor($x, $y);
    imagefill($img, 0, 0, $color);

    imagepng($img, 'out/' . makeName($color) . '.png');
    imagedestroy($img);
}