@sparkes983 Your second attempt looks nicer, with a better play between colors in my opinion. For making the view out the window blue, how were you doing that? Was it 2.7 or 2.8? Cycles or Eevee? I noticed when I switched to Eevee and then tried changing the environment color it affected the whole image, not what was seen through the window.
The updated truck is interesting, like a clear coat of plastic is peeled off in areas.