Might be that they are standard. From the 2017 change list that was up on the Steinbring website for a few days I found this.
Roller shades now standard
Doesn't say what type of shades. Newmar order forms for the 2017 is throwing an error tonight so can't look at those. It was an option on the 2016 sheets that are available on the Newmar site. I checked a couple of models and saw MCD shades and MCD power shades depending on which one I looked at. 2016 VTDP 4311 shows both as options.
Gary 2017 Dutch Star 4369 Spartan
HWH Active Air Centramatic wheel balancers
Box Elder, SD and the road