For many of us, knowing what colours go with what can be a daunting task. But thanks to ColorBlender, even the most colour illiterate of us can make some sense of knowing which colours fit together.
Another site doing something simliar is Color Schemer.
Adobe have even established a social network around colour blends called Kuler.
And for those of you looking for examples of new styles for websites .. this post is a great visual read.