I agree with you. There should have been notification when production started not when tops were in people's hands.So the Tungsten material was changed between prototype and production, they came out a different color, were sent out as-is, and the only option is to return for a refund, no exchanges? I would be upset about that; the blue color was one of the main draws of that perk. Seems like as soon as the problem became apparent, at a minimum the perk owners should have been informed and given a chance to switch perks (with refund of price difference) while production was still ongoing. That would have likely limited them to standard materials but it would have at least given them the option to get a different K2.
Really, the proper way of handling it would have been to scrap the bad ones and re-run them using the original source of W that colored properly. That's what the customers thought they were buying, after all. Sure, that's a business hit, but a business should take the hit for its own mistake, not the customers. Delivering a product different than purchased with a "take it or leave it" message seems an unusual business practice if trying to maintain an ongoing relationship with one's customers...
Anyway, I almost got one of those but went for a different colorway, luckily. It's out for delivery today and I'm looking forward to it.
@AndreaW nice tops and mine has NO blue very dark black and it's hard to get it off my mind!