Hi Brian, and :welcome1: to the Gauge.
Depending on which maroon you want to duplicate, there are several options. This colour appeared very differently depending on the age of the paint and the lighting. I used to paint TH&B diesels for a LHS and used a custom mix of PollyS (no longer available), then, later, Floquil paints. My version tended towards a boxcar red/brown, although I also did some in a more maroon colour. In my opinion, LifeLike Canada did the best version, and I'd recommend starting with their r-t-r geeps and switchers.
Here are some pictures of the prototype to give you an idea of the variety of "maroons". (All photos have been "colour corrected".)
and a couple shots of my modified and remotored Athearns:
My formula for the "brown" version, using either Floquil or PollyScale paints, is:
6 parts Roof Brown
3 parts Reefer Orange
1 part Caboose red
and for the cream:
3 parts Reefer White
2 parts Depot Buff
1 part Reefer Yellow
if you want the more "purple-looking" maroon, try Tuscan or Tuscan Red, with the cream mixed:
6 parts Reefer White
2 parts Depot Buff
1 part Reefer Yellow
Another option for the maroon would be Wisconsin Central Maroon, or, from SMP Accupaint, B&M Maroon.
Wayne