Xen Demo Load Variable in Css

<?php
class Sedo_LoadCssVariable_Listener
{
    public static $loaderOjb;

    public static function initDependencies(XenForo_Dependencies_Abstract $dependencies, array $data)
    {
        XenForo_Template_Helper_Core::$helperCallbacks['variable_css'] = array('Sedo_LoadCssVariable_Listener', 'getCssVariable');
    }

    public static function getCssVariable($methodName, array $options = array())
    {
        if(!self::$loaderOjb)
        {
            self::$loaderOjb = new Sedo_LoadCssVariable_Loader($methodName, $options);
        }
        else
        {
            self::$loaderOjb->loadNewOptions($methodName, $options);
        }

        return self::$loaderOjb->$methodName();
    }
}

class Sedo_LoadCssVariable_Loader
{
    protected $_currentMethodCalled;
    protected $_options;

    public function __construct($methodName, array $options = array())
    {
        $this->_currentMethodCalled = $methodName;
        $this->_options[$methodName] = $options;
    }

    public function loadNewOptions($methodName, array $options = array())
    {
        $this->_currentMethodCalled = $methodName;
        $this->_options[$methodName] = $options;
    }

    public function getcurrentOptions()
    {
        if(isset($this->_options[$this->_currentMethodCalled]))
        {
            return $this->_options[$this->_currentMethodCalled];
        }

        return array();
    }

    public function __call($name, $arguments)
    {
            return 'Unknown method';
    }

    /**
    * Custom functions
    */

    public function getBlackColor()
    {
        return 'black';
    }

    public function getCustomProperties()
    {
        return array('color'=>'blue', 'background-color'=>'red', 'border-color' => 'yellow');
    }
}
//Zend_Debug::dump($abc);