ok. coolest thing EVER.
http://labs.ideeinc.com/multicolr#
The colourlab by IDEE searches for pictures from flickr by colour. So if you pick red, a slew of red photos in the tone you chose will show up. I think you can pick up to ten different colours.
http://colourpost.blogspot.com/
This blog hasn't been updated in a while, but if you browse through the archive, there are good palattes.
http://pingmag.jp/2008/09/25/thoughtful-design/
thoughtful packaging design
http://www.jamesbowskill.com/offtheshelf/
a scrapbook of japanese packaging design
