TineEye searches Flickr albums for specific colours and displays images that match them. You can choose from 1 to 5 colours and the results are instant.
This can be really useful when you need a background or illustration for a presentation or site page that suits your main theme.
Another TinEye application will find any images on the web that match one you’ve selected. This can be invaluable if you want to see whether someone has used your photo elsewhere or to check where an image you wish to use has either originated or been displayed.