In general, embodiments of the invention provide an approach to differentiate and/or customize image files in a networked (e.g., cloud) computing environment. Specifically, a plurality of images corresponding to a requested instance, and all configuration files corresponding to the plurality of images, will be identified. In identifying the configuration files, a first subset of configuration files that are common to all of the plurality of images, and a second subset of configuration files that are unique to individual images will be determined. The user can then individually select configuration files from the two subsets, and the requested instance can be generated based thereon.