practically most used background colors in web design

Question

I'm customizing a color picker's default showing colors which will be used as background colors. I'm wondering if there is a collection of the colors that are particularly useful in practical web design. Like nobody(hopefully) would use #f00 as a 100%-width page's background color while #fff is a universally usable one, there's DO'S and DONT's when it comes to picking background colors. So what are the candidates in your opinion?

I know this could be subjective, but generally I believe there IS a solid set of them.

[edit] : I kinda have an idea to customize the color picker in a logic way, first pick a buch of hues, them for each hue, start from the possible lightest of saturation to the possible heaviest. A bit demenstration:

gray [ #eee, #ccc, #ddd, .... ]

green [ ... .... ... .... ]

blue ....

yellow

brown [

Answer 1

As for a realistic answer, #fff won the race, right? Sometimes you'll see shades of gray, #eee, #eaeaea, and an occ. #000.

If you want to mix things up, I'd recommend checking out http://kuler.adobe.com/ to get an idea for what's popular, but perhaps slightly different. It's fun to experiment with the palettes up there.