Painting of Lionel M7 Shells

Kevin, I would recommend painting the inside of the shell black, that is the best color for deterring light from bleeding through.  The outer shell should take any good  paint from Krylon or Rust Oleium. Not sure, but I think the shell is polystyrene'...  

Polystyrene could be affected by Krylon and Rust-o-Leum. I would test it out on the inside surface first. You could go with a paint designed for plastic such as Testor's Model Master, Vallejo, or Tamiya. These work best when airbrushed.

I'd prime with Tamiya model primer inside and out first, then use whatever suits your fancy.  

Mitch

Thank you for the responses folks.

You' re welcome Kevin'.  Good luck with the project.  For the inside you can paint it with a brush of any good jet, flat, black craft paint'.  Do you have a air brush, id so I would recommend Vallejo ' air brush  paint.  It is very, very good....