I've purchased a LV Damier Triana bag awhile back ago. I notice that the brass hardware on the zipper is turning to a dull/silvery color. Does anyone have the same problem. I would think that the amount that we spend, LV could afford to make solid brass or even solid 14K gold hardwares instead of brushed-on brassy color. It makes my bag looks old and cheap. I notice that the hardware on my other bags have a better brass quality that doesn't turn. Do LV make their hardware differently in differ bags?