1. A method comprising: receiving a first mathematical model associated with transforming first color data into second color data, the first color data associated with a color image as represented in a first color space and the second color data associated with the color image as represented in a second color space; and generating, by operation of a computer, a second mathematical model approximating the first mathematical model, the second mathematical model conforming to a defined color management system architecture, the second mathematical model substantially invertible to enable generating an inverse of the second mathematical model that accurately reproduces color data in the first color space based on unmodified second color data after converting the first color data into the second color data to facilitate modification of a portion of the second color data, wherein the first mathematical model is associated with a logarithm function and generating the second mathematical model approximating the first mathematical model includes replacing the logarithm function with a power function approximating the logarithm function.