While searching for ZDZ 50 NG pictures, I found the following:

http://www.zdz-motor.de/50rveng/lokal

and

http://www.rcshowcase.com/html/engines/zdz50.html

As you can see, the first link shows an slick engine with blue parts while the second one shows an old looking engine.

Which of these engines should I expect if I buy a ZDZ50NG ?