public static function setColors(array $colors = array())
    {
        if (!empty($colors)) {
            static::$colors = $colors;
            return;
        }
        static::$colors = array(
            \Monolog\Logger::DEBUG     => 'purple',
            \Monolog\Logger::INFO      => 'cyan',
            \Monolog\Logger::NOTICE    => 'green',
            \Monolog\Logger::WARNING   => 'yellow',
            \Monolog\Logger::ERROR     => 'red',
            \Monolog\Logger::CRITICAL  => 'red',
            \Monolog\Logger::ALERT     => 'red',
            \Monolog\Logger::EMERGENCY => 'red',
        );
    }