La sportiva nepal evo gtx crampon attachment

Hello, I have seen la sportiva nepal evo boots with different colors of backside crampon attachment(i don't know exactly name). Most of the boots crampon attachments is yellow color, but my friend's boots have black details. Is there any fake versions or something like? thank you

Different version of the boot I think

any other ideas? I didn't find yet nepals with similar detail

...I doubt there’s fake Evo’s around and would think it might just be material availability during manufacturing. You’d also probably see a difference in all materials and workmanship. With that said I think you should be asking La Sportiva directly.