I found this photo on the Internet of one of these kits that had been completed and liked the colors used for the building and roof.
Here are some of the major parts after being painted. I did keep close to the same color scheme but reversed the base and trim colors of the building using Floquil antique white for the walls and reefer white for the trim.
Floquil oxide red applied with an airbrush was used for the roof and I decided to give it a little more variety using engine black for the railings. Not shown in the photo I used Floquil concrete for the base. The base was already about the right color but I find that everything looks too plastic unless its painted so I paint nearly everything in an unpainted kit.
Realizing that it would be hard to reach many of the details after the building was fully assembled, I hand painted those at this stage.
Next I'll be working on applying some colorful signage to this station.