Durpal color search module

Hi I have a Drupal based image search website ( [login to view URL] ), and I want to extract the color from uploaded images using [login to view URL] and then come up with a way to search by color I want it to work just like this site: [login to view URL] but (this is very important) less strict on colour so that if selecting blue, various shades of blue are returned. It will need a way of grouping visually similar colors (maybe using HSL / HSV or any other way to group similar colours such as similar dark reds or similar light blues etc.) Specifics on this functionality: 1. if searching by one color, the first results should be where that colour is most prominent, and then as the results go down should show where that color features in less and less quantities 2. If searching by 2 or 3 colours, in the same way where they appear most together should be shown first 3. I should be able to modify the level of fuzziness (distance between the colour swatch beign searched and similar colours)