No issues at all. Pre Treated them with "Shout Advanced Stain Remover Gel"
Not sure if you can tell in the pics but there's still a faint stain, but it did a pretty good job.
sz 7, 7.5 in the 3M's
http://sneakerpolitics.com/products/adidas-ultra-boost-black-3m
still on the hunt for 6.5 all whites, missed out on that UBIQ restock