Nah, Icy Engrams have been the same since their introduction and have only contained the Chroma set.

I'm confused, you made the decision to buy a bunch of engrams. Since you didn't get what you wanted, you want all your silver dust back so you can keep trying until you get what you actually want. What if they refund it all then you sti don't get it? Will they have to do it all over again until you do get that mask? Why not just ask them to drop the item in your inventory? Lol You do realize there are loot tables available for literally every in game activity, vendor, or engram? You can google and find those loot tables, and they will tell you every possible item you can get and from where. In the terms of service for the game it says Bungie will not retrieve lost or deleted items or accounts, or refund/set back any in game actions like purchases or infusions etc. So, ugh yeah... You're sh!t outta luck buddy...but on the bright side back when these items first came out they cost real money to get. When Eververse was first introduced into the game some people spent hundreds of dollars buying boxes to get the wolf mask, or the ghost ghost. Seriously you can google it or check reddit and probably posts on here and see stories of people spending $200+ on those boxes.