1. A method of sorting electronic color images of objects, the method comprising: receiving, at a server from an end-user device, an input representation of a desired object to be located in the color images, the input representation including first data representing a first color of the desired object, the first data being in a first color space, determining an indication of saturation of the first color; defining a prescribed range of saturation indications based on the determined indication of saturation of the first color; comparing the prescribed range of saturation indications to a plurality of candidate saturation indications associated with a plurality of stored candidate images; and in response to the candidate saturation indication associated with a presently compared one of the stored candidate images not being in the prescribed range of saturation indications, the prescribed range of saturation indications including the indication of saturation of the first color, discarding the presently compared candidate image as possibly including the desired object; or in response to the candidate saturation indication associated with the presently compared one of the stored candidate images being in the prescribed range of saturation indications, determining that the candidate image possibly includes the desired object.