Running my Blue version on the rolling road as I type. Using an old Hornby 3 position controller which is not brilliant. Ran well at full speed and soon quietened down , was great at the middle setting and very quiet, then I set it on the lowest setting and thought it had stopped. On closer inspection it was turning over very slowly and exceedingly quietly and only the slight rocking gave it away. That is quite impressive . Haven't opened it up yet to fit a decoder(X9659) so can't be 100% sure if its self coloured plastic. If it is then that in itself is impressive. Windows, they look better in real life than on the photos possibly because of reflected light. The plastic on the side panels is very thin, thinnest I have seen on a model so that is well done.Have to say so far an amazing little loco especially for the £45 I paid. Hornby can certainly shut up some of their critics if other models come out to this standard.