They must be albinos, my copper produced over half albino babies when bred to a wildtype. Copper x regular albinos only produce albinos and coppers. Plus coppers produce white eggs. I found it interesting that "axolotl book" everyone references here printed in the 70s with the cow spot axie on the cover even states the existence of tan coloured albino axolotls, I’ll try to scan the page tonight.
They are common in Australia and lots of us have bred them. To me the second picture looks like a copper, but the first a light wildtype, but you said thats just because its been treated with Methylene blue. I think its because of the noticeable tan colour. The most confusing part about coppers is that they do have dark eyes. They are vary very dark red, not like a normal albino which has pink. Most of the time the red is so dark it can hardly be called red, the best way to check is to shine a torch right at the pupil, and it should shine a deep maroon colour. or breed it, if it produces white eggs, its a copper, or if it produces the right ratio of albino offspring, its a copper.
another distinguishing feature i have found also is the very large gold ring around there eyes. The shiny ring seems to be more dominant in their eyes compared to wild types, with only a little dark pupil in the middle. The ring is large and a very shiny gold or silvery colour. It looks like the axie in the photo has this but its hard to tell from the angle.
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