No, the new buttons look a completely different colour to the advertised ones ... but given the length of time it took for me to pick them up and the word way colours look on a phone ... I can't really be bothered to send them back.
Looking at screen shots from The Last Crusade, including ones on the auction website, Indy's shirt has similar English Rim buttons to the first two films:
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Which suggests that shirt they're auctioning as "Harrison Ford's Last Crusade shirt" may not be screen used.
Or at least the buttons weren't.
I haven't gone through every scene, but then he has a jacket and tie on for most of the film so you can't really see them.