OK, this is interesting. It arrived today, and there are a couple curious colors here. What's left of the upper walls paint (inside) looks much darker and more yellowish brown, sort of like a mustard color. Did Lionel use something like that?
The windows were apparently peacock and the roof pea green. the base was Mojave, and the lower walls were Terr Cotta, so they matched what I expected. there is just a hint of ivory (or maybe cream: too little left to get a good idea) left on the upper floor/cornice.
The door and the round part Under the bay window were apparently maroon. (Riddle uses the term "vermilion in one of his descriptions, but no pic.)
So I think I will try to come close to the original scheme.
I am not going to try to take it any further apart. I can feel how delicate the tabs are already. Reassembly concerns me.
I will try to finish the exterior stripping mechanically with a wire wheel in a dremel.
It came with the knife switch panel and all 6 switches as well as a pair of switch controllers and the necessary screws.