I decided that i needed a caboose that looked more like it belonged in the steam era than my 2 blue B&M cabooses.
I started with an Ebay buy similar to this one, a common 117 junk caboose.
After a few additions and new paint I now have a caboose that looks as elegant as my Speedlettered B&M steamer.
Below is a short video of the caboose on my B&M freight.