This is coming a little to late. But just found out a friend in Washington State has a green Atlas British Columbia Railway caboose for sale and also an Atlas RS3 BCR Green as shown at the top it is a dummy available in 3 or 2 rail just in case anyone is still looking for a caboose or could use an engine. Again excellent work on the caboose repaint.
Here are photos of when I ran all my BCR trains last year on the garden railway showing the factory BCR caboose. Click on photos for a larger view.