Just make sure that you save the receipt and tell him that you weren't sure which color he'd like, so it's quite alright to exchange them if he wishes to.
BOYS: I'm getting my boyfriend a pair of Yeezys V2 for his birthday. Do you guys like the copper or Oreo color scheme better? Thanks :)
If he's your boyfriend, you should find out what color HE likes best. Find something else in those colors, and ask him.
Yeah, I like them. I do think they'd go best with casual clothes. Though, the shoes themselves seem a bit too flashy in my taste... Yet, he might think otherwise on all my opinions because we are separate human beings. I think Ancient Hippy has a good idea with keeping the receipt though if you wanna be safe.