What color for hardwoods and carpet?

[Aaron McGinnis]

So since we've got a very interesting thread going on wall color, I thought I'd ask -

What color is everyone using for hardwoods and carpet? We try and go as light as possible with the hardwoods while still covering stains.

To wit, the project we're on right now has some saved-wood floors that are more than 60 years old, so we're having to use something like special walnut or dark walnut (Minwax), but normally we try and go lighter like, say, cherry.