Google Images Color Selection
Google Images it seems is adding a new feature which is a color selection, available by adding the URL parameter &imgcolor=. While the feature may work quite well for some close up on animals like cats with black color, Another example for black cars however would show a much lower success rate, probably due to [...]
Experimental Flickr Color Picker
The Experimental Flickr Color Picker: Simply, pick the color you like, and get related photos from Flickr :)