ZCE sticker

Got my PHP5 ZCE certificate in the mail the other day along with its sticker. Just one question – why is the sticker in the PHP4 ZCE colors (gold) rather then the PHP5 ZCE colors (blue/purple) with the PHP5… was kinda hoping it would be different then the one I already had. :\ Call me picky.

PHP4 ZCE  PHP5 ZCE