In Nicaragua I learned the word "maduro" doesn't actually mean "darker." Maduro is a treatment of tobacco leaf, and yes -- it does darken the leaf somewhat; but it all depends on how light the leaf was to begin with. And this being a natural product, there's bound to be a difference in colors, especially year-over-year. You can't actually look at a leaf and say "Oh that's a Maduro." You need to get that info from the manufacturer.
With all that said, the photos above show rather extreme color differences, far more than I saw on the sorting tables, so maybe there was a mistake somewhere along the line? Humans made the product, after all. Can't wait to see their email response...