I came across a suggestion in the Privateer Press Forums today that seemed like a good idea. Home Depot has a "Team Colors" program with colors from lots of different teams.

While I'm definately not a sports fan, this could probably serve as a good source of inspiration for those that don't know what to do with their color schemes. Sports team colors tend to go well together. Also, if you use something like part of the army in "home" colors and part in "away" colors, you can build a variety into your army while still providing cohesion. Just a couple of thoughts.

Also, the site has a PDF available with all the colors shown. It's on the bottom right of the page. The site wouldn't let me link directly to it.