I just recieved my undecorated GP35 and am happy with the way it came.
It has roof hatches for both dynamic and non-dynamic brake versions.
All detail parts are in bags, including glass, sunshades, grab irons, fans, air horn and air tanks.
All plastic parts are unpainted light gray, including the sideframes and railings.
The lights are small grain of rice bulbs that fit in the headlight openings.
All in all this will be a fairly easy model to do a conversion on or paint in a scheme that was not offered.
My only negative impression was that the shell and walkways are one piece and that the walkways are smooth without a tread pattern.
Bob DeWoody