Multicolr Search Lab
There’s oodles and oodles of pictures on Flickr, but what if you’re looking for those that fit a specific color palette? Then the Multicolr Search Lab is exactly the tool you’re looking for. It allows you to select up to 10 different colors and search through Flickr’s database of interesting pictures that match those colors, including links to their places in their respective photostreams.
For example, the two primary colors for this site — namely, Post-It note yellow and nondescript gray — generated the following collection of images, which is only a subset of those actually displayed and available: