Has Birkenstock started using a different color for their logo or are these a cheap knock-off? I have over 15 pairs of Birkenstocks and all of them have the name printed in gold lettering on the insole of the shoe....these are printed with brown, not gold, and not only do they fit smaller but they came in a plain brown box with no logo or labeling! Not sure if this is from the product or the seller, but buyer beware on this one!