Congratulations on your new pick-ups and getting your friend into the addiction!
But I'm gonna have to say that I think your LFS is taking you for a bit of a ride. That scooter blenny looks quite skinny to me, which he shouldn't if he really eats frozen - I'd really work hard to fatten him up and hopefully he'll come around for you! And the first favia you posted looks pretty bleached out, and the second one (which I think is actually an acan) also looks a liltte bleached, though not as bad as the first (but I think both will color up under your care). If he's selling them to you and telling you they should be light/white in color like that, then I think he's full of :pooh: