I've been trying to figure this out as well. A lot of the horsebutt that Horween has put out has a more surface dyed look to it and scuffs off very quickly, in contrast with the deeper colors of the Italian horsebutt and the struck through mahogany horsebutt from the Division Road run. It's possible that it's just batch to batch variation.I wonder if the Blue Button Shop make ups were the Maryam Tannery stuff. The grain in the brown looks so similar and comparing my color 4 workshoe butt from Miloh Shop the leathers are pretty different.