http://colorschemedesigner.com/
http://vandelaydesign.com/blog/design/find-the-perfect-colors-for-your-website/
http://www.princetonol.com/groups/iad/lessons/middle/color2.htm
http://spyrestudios.com/the-user-experience-and-psychology-of-colour/
http://www.uxbooth.com/blog/creating-consistently-colorful-user-experiences-part-3-the-craft/