I have a Brown Isabella that have random dark spots appear since I got it. Not from handling or wear, they just show up. Luckily in this case it makes the bag look more Vintage and rustic so that's cool. I would not be happy if it happened with my Elisha.
Kooba keeps spreading the joy with their ever changing leather this season.
It's a new blue one. I've actually returned 3 of them to Neiman Marcus because of various problems... the one with the spots also had excessive dried glue around the seams. Not a huge deal, but for $500+, no thanks...
My red one had a spot appear AFTER I had protected it (twice) and conditioned it, etc. It was all dry and happy, and then like a day later "BOOM" - there it was. I hadn't even taken her out, she was in her sleeper bag.
It's not too bad, but WTH? Why would a leather do that?