I'm interested in seeing this 'Blue Moose', too. Hopefully someone will post photos/video of this creature of the imagination.
When I saw the catalog artwork, it seemed like the blue color was being portrayed as some sort of anodized treatment. And, WOW!, that certainly would be eye-catching and an iron horse of a different color!!!
Which led me to imagine an appropriate string of cars for this beast. The prototype "Blue Goose", #3460 Hudson 4-6-4, was most famously associated with the streamlined "Chief", all-stainless. In its life, however, it pulled an assortment of equipment, of which in later years was more of a disgrace to its style. They shortened her hem-line and quit washing her, too......rather a nasty way for such a unique speedster to go to the torch.
I wondered what a string of Lionel's 2500-series aluminum cars would look like if, for instance, as was done with the O27 2400-series passenger cars, the window-line panel was painted with a blue stripe.....which Tamiya neatly offers in their for-polycarbonates (read: R/C car bodies) paint line, item PS-16, Anodized Aluminum Sky Blue...
I'm sure it would adhere to aluminum, but this line of paint should NOT be used on more common hobby plastic such as polystyrene.
Our LHS has stocked it....it's quite the attention-getting blue color on an R/C car body! Currently Tamiya is out-of-stock, but there's lots of it available on the web.
But, until the Lionel 'Blue Moose' is seen, who knows whether the artwork is credible....as per their standard caveats. It might end up the usual blah-blue....
KD