Listphile recently posted a compilation of a number of Fortune 500 logos on their site, and that image is pretty telling. Many of the logos have something in common: blue.

Brandflakes does a great job of explaining why this happens, particularly for Fortune 500 companies:

1. Blue is the only color that most people don't hate.
2. People don't get emotional over blue.
3. Blue makes people comfortable.
4. Blue is a committee buster—helps when it has to be approved by many.

I think this presents a great opportunity for other large companies to stand out with color (check out Sprint & Home Depot).