[sramam]

The filter by color works really well!

Especially since you mention crawling stores, would be interesting to know how the color-matching works. I'd think the metadata is not very consistent.

[Jim_Neath]

I originally tried analysing the colours in the images and picking out the most common colours used.

In the end, I just ended up using the colours mentioned on the pages when I scrape them.

It works well generally but throws a few false positives.

[iamben]

Great idea ;-)

I'd also love an explanation as what you're doing on the crawl to collate it all?