Sorry if this isn't the right place to ask, but why do you want photos that aren't from official comeback shoots? Wouldn't those photos be the best to use? Or would that create a copyright issue? Thank you!
@TangerineHongs
It's because usually Kpop idols change their hair color/style a lot with each comeback, so rather than having them from a specific comeback, we'd prefer having a picture that is most representative for each idol (if he/she is usually dark haired we'd rather have a pic of them with dark hair instead of a pic with them having pink hair for example, which they perhaps would only have for one comeback).