#3 -- Red - Industrial/Minimal
Looked up some industrial style sites for this one. It seems to be a mix of rustic woods/brick and metal.
I went with that and put several "shipping containers" together. And tried to make it look industrial both inside and out.
I'm not the biggest fan of Red, but I think I did a pretty good job with this build. I furnished only the 1st floor.
Front:

Inside - floor 1:

Inside - floor 2:

The "metal" roof: (Wood flooring with metal pattern)

Back side of house:

I used wood paneling for the walls with a metal pattern on them. To get a ship container look. lol