Those are very nice and rugged boots matey. Something is throwing me off here. The dark area appeared after little wear you say. That darker 'blemish' seems to me the original colour and the tan was sprayed over. If you look at other RRL boots you'll see what I mean. Can you please confirm this before I go any further. If my suspicions are correct this was deliberate so as you wear them they'll develop a patina-like wear to them fast. I need you to get the magnifying glass out first to verify.