I hate that they called them "Frost" white. What does "Frost" even mean?! They're just recessive white birds. I love them because they're still autosexing, but none of the color and pattern drama that I get with the gold and cream and none of the feather issues that I get with lavender. I can focus fully on production qualities and type. I'll try to find some photos later.
"Frost" White always bugged me, too! But, of course, I'm kinda bugged by a lot of those 'designer' names like Favaucana, Midnight Majesty Marans, Plymouth Blues, etc... All supposed to be catchy, but in the end just confusing for no reason. Frost White is especially rank, though, because as you said... they're just White Legbars.
And Plymouth Barred Rock. That is my biggest pet peeve with breeds! Anyone who advertises their Barred Plymouth Rocks as 'Plymouth Barred Rocks' is just straight up telling me they don't know a darn thing about their own breed.
Whoops, sorry, I got on a bit of a rant! Anyway, no pressure for photos or anything if you can't find them, I just love staring at / drooling over gorgeous birds.