Here is a prototype (real life) paint scheme that Lionel could use. The only real difference that I can see is the sheet metal between the hopper bays. Those would be easy to add to the Lionel model. UP may have put those on after they were delivered since I seem to recall seeing pictures of those hoppers without them. More research is needed but even if Lionel put this paint scheme on their car, it would be close enough for me in the short term. The heritage cars will be collectors items and I'll help make them rare since I would strip them and repaint them for one of these cars.
Greg
Sparks NV 07/03/2004