public static function em($text, $htmlOptions = array(), $tag = 'p')
    {
        $color = TbArray::popValue('color', $htmlOptions);
        if (TbArray::popValue('muted', $htmlOptions, false)) {
            self::addCssClass('muted', $htmlOptions);
        } else {
            if (!empty($color)) {
                self::addCssClass('text-' . $color, $htmlOptions);
            }
        }
        return self::tag($tag, $htmlOptions, $text);
    }