I use a lot of Durasteel in my house, with Tungsten siding backwalls. My main colony is more of a "Good Future" city. Lots of gray and white. I use lots of tungsten siding and titanium panels. I use glass windows and those little outpost lights. The houses are square, and arranged in pyramids, with support stilts so you can walk under them. The houses are smallish, but I have my "society" set up so very little time is supposed to be spent in the houses, rather than out doing things and having fun. It's on a barren planet that's being covered over with cobblestone and dirt in the nonresidential areas. I plan to build a "power plant" that powers the whole planet, but I want it to be some clean, yet mystical power source. I wanted to use Erchius crystals, but those were disabled.