Here's my shot at it from a few months ago: http://github.com/quadule/colorscore http://github.com/quadule/colorscore ImageMagick does the actual color extract

Here's my shot at it from a few months ago: http://github.com/quadule/colorscore http://github.com/quadule/colorscore ImageMagick does the actual color extraction, then I wrote some code to score those colors against a palette for use in a "search by color" system.