My dining room is dark brown--Behr Wild Horse (I was paying attention when you said you wanted to use BM, but I'm going somewhere here.) Not as sophisticated as the browns Tribbix suggested, but I was going for "Hershey Bar" and I'm happy with it. The thing is, I tried out a bunch of browns. I tend to use a process of elimination--at various times of day I evaluate the samples and at each point eliminate my least favorite. Usually there's a clear winner. With the dark browns I got down to about 5 and didn't really have a preference. Any of them would have been fine, and I picked Wild Horse out of the 5 more or less at random. So my point is that, for me at least, there was a lot more margin for error in choosing a dark brown than, say, a blue. An I think more margin with dark colors than with light colors (light colors seem to be more chameleons with changes in the light. What color is your wood trim? That would seem to be the wild card in this. I have white trim, so it wasn't an issue for me. I can definitely foresee limitations for you trying to pick a brown that works with your trim.

Downspouts are one of my least favorite utilitarian necessities, so I'd get them as close to the color of the logs as possible so they blend in.

depends on stain shade of floor. Brown can be reddish/ orangeish/ or grayish.... as well, light medium and dark w regard to the intensity. And your lighting will make a difference too. [natural light/or lack...and room lighting] . some woods with smooth texture and medium to dark stain can be an alternative to the expense of paint...and the upkeep of paint also. Picture cherry with a medium to dark stain will over time have an even look without the grain of oak if that's your goal. Birch and alder with darker stains will be similar in even smooth texture. Brown is rich and warm and there are different ways to achieve the smooth brown painted look.....[before you cement your decision. ]

Love the body + trim! (But severe contrast garages doors always remind me of a huge gaping mouth) Sorry! They certainly have impact and draw the eye though. I just don’t understand why one would choose to make something so utilitarian and large in scale, the major dominating feature of the whole home? To me the fashion equivalent would be - a fabulous new black dress for a BIG night out accessorised with diamante knee-pads! Perhaps if I owned a few fabulous cars, I might feel differently! 👍🏎🏎🚗🏎