1. A method of modifying color associated with a source environment for presentation at a target environment, the method comprising: applying different non-linear functions to transform subsets of data representing a color of a sample at the source environment into transformed subsets of data; and generating data representing a chroma correlate as an appearance correlate independent of data representing a hue-related correlate, wherein the chroma correlate is configured to generate the color at a device at the target environment.