I like blue and white lights. My christmas tree has the traditional honking-multi-colored bulbs, which I thoroughly enjoy. But when it comes to houses, I think less is more. If there's lots to cover, just plain white, with maybe some blue highlights. My town has something called a 'tree lighting ceramony' where we all tromp down to Main street and watch them turn on the first street lights of the year. And then it spreads like wild fire. Thats usually the weekend after thanksgiving. Our trees are lined with simple gold lights. It looks really pretty.

Mmhm.
My room has christmas lights year round. White, purple, red, and green. It makes for good make-out light.