40. A computer-readable memory medium on which is stored computer-executable process steps for causing a computer to build a color transformation workflow for transforming source-side color image data into corresponding destination-side color image data; the computer-readable memory medium further storing a module library, a profile library, and a rule library, wherein the module library includes plural module entries each corresponding to a respective function module which implements color processing functionality, wherein each module entry comprises at least a module locator specifying a location for the function module, wherein for at least some of the module entries of the module library, the module entry further comprises a profile interface definition which specifies an interface for supply of parameters which characterize the function module, wherein the profile library includes plural profile entries each corresponding to a respective source of parameters that characterize a function module, wherein each profile entry comprises at least a profile locator specifying a location for the source of parameters, and a profile interface definition which specifies an interface for supply of the parameters to the function module characterized thereby, wherein the rule library includes entries for plural external rules and entries for plural internal rules, wherein each such external rule is associated with function modules located by module entries in the module library, and wherein the external rules and the internal rules characterize color transformation workflows of the color management module, and wherein the process steps comprise: receiving factual input including factual input derived from the source-side color image data; determining a sequence of function modules and sources of parameters from the module library and profile library, respectively, by using the factual input from the interface and the plural internal and external rules in the rule library; and building the color transformation workflow from the determined sequence of function modules and sources of parameters.
40. A computer-readable memory medium on which is stored computer-executable process steps for causing a computer to build a color transformation workflow for transforming source-side color image data into corresponding destination-side color image data; the computer-readable memory medium further storing a module library, a profile library, and a rule library, wherein the module library includes plural module entries each corresponding to a respective function module which implements color processing functionality, wherein each module entry comprises at least a module locator specifying a location for the function module, wherein for at least some of the module entries of the module library, the module entry further comprises a profile interface definition which specifies an interface for supply of parameters which characterize the function module, wherein the profile library includes plural profile entries each corresponding to a respective source of parameters that characterize a function module, wherein each profile entry comprises at least a profile locator specifying a location for the source of parameters, and a profile interface definition which specifies an interface for supply of the parameters to the function module characterized thereby, wherein the rule library includes entries for plural external rules and entries for plural internal rules, wherein each such external rule is associated with function modules located by module entries in the module library, and wherein the external rules and the internal rules characterize color transformation workflows of the color management module, and wherein the process steps comprise: receiving factual input including factual input derived from the source-side color image data; determining a sequence of function modules and sources of parameters from the module library and profile library, respectively, by using the factual input from the interface and the plural internal and external rules in the rule library; and building the color transformation workflow from the determined sequence of function modules and sources of parameters. 45. A computer-readable memory medium according to claim 40 , wherein the module library is updatable so as to permit introduction of new module entries after deployment of the color management module.