1. A method for creating a computer-implemented avatar, comprising: capturing a plurality of detectable attributes of a user; comparing said plurality of detectable attributes with a normalized model of attributes, wherein the normalized model of attributes characterize normal representative attribute values for a particular attribute as samples across a plurality of users; outputting at least one differential attribute representing the difference between the plurality of detectable attributes and the normalized model of attributes from a differential system to an avatar creator system; customizing an appearance of at least one avatar by the avatar creator system by adjusting at least one adjustable attribute of a base avatar definition by the at least one differential attribute, wherein the customized avatar reflects a selection of the plurality of detectable attributes of the user which are distinguishable from the normalized model of attributes as applied to the base avatar definition; graphically distinguishing the customized portion of the appearance of the at least one avatar as applied to the base avatar definition by displaying an additional graphic attribute comprising a distinguishable color applied only to the customized portions of the at least one avatar reflecting the at least one differential attribute.