if i had the wherewithal to design my own house, it would be a mix of different themes in different rooms- one room might be like a church with cathetral ceilings, dark wood paneling and stained glass windows, with an ambient acoustic environment- that would be my music room.
another room might be quasi-medieval, with earthen-looking walls and torches hanging high on the sides, and dark lighting- sorta cave'y.
yet another room might be high-tech, as in the bridge of the star ship enterprise.
another room would be all flat black, from floor to ceiling, no windows, and fluorescent stars on the ceiling and fluorescent clouds on the floor and walls, illuminated by UV light.
still another room would be all white, with huge bay windows and scan-design furnishings.
i would have a second house carved out of a mountain-face cave, that would overlook a body of water in a valley. the interior scheme would be late flintstones.
a third house would be ala "the jetsons" - like living in the stratosphere tower lounge, with robots and maybe a flying saucer moored on the railing.
as a publicity stunt, fox built a real replica of the simpsons house [complete inside and out], which they gave away in a contest. the unimaginative dolts who won it promptly remade it into a conventional house. "no accounting for taste."