protected function _rgbToString($rgbArray)
{
if (version_compare(Mage::getVersion(), '1.4.0.1') > 0) {
return parent::_rgbToString($rgbArray);
} else {
$result = array();
foreach ($rgbArray as $value) {
if (null === $value) {
$result[] = 'null';
} else {
$result[] = sprintf('%02s', dechex($value));
}
}
return implode($result);
}
}
