1. A method for displaying images, comprising: receiving user input that selects a user-selected visually perceivable attribute from a plurality of selectable visually perceivable attributes; displaying a plurality of images in a manner that visually reflects values that the images have for a particular metric; wherein displaying the plurality of images includes, for each image of a plurality of images: determining a default value of the user-selected visually perceivable attribute; and displaying the image so that the displayed user-selected visually perceivable attribute of the image is changed from the default value, and the amount of change from the default value is based on the value that the image has for the particular metric; wherein the particular metric is logically independent of the user-selected visually perceivable attribute; and wherein the method is performed by one or more computing devices.