Showing some updates over the past month.
First off, Peter A, I followed your suggestion on painting the floor first.
Have had an interesting time the past 4 weeks with 2 different orders of paints that looked online that they would work with the seat color I wanted and when they arrived the colors were anything but. Then there was a paint that I tried which the color was right, but the paint type (I don't recall it off hand) would not adhere to the plastic seats.
The gray surface primer sprayed on:
So I finally went with #21353E Mountain Blue by Apple Barrel
A select few passengers from the Rail King tour group testing out the seating at the factory 
