1. A method for transforming a colorant vector representing amounts of chromatic and non-chromatic colorants in a first colorant vector space that is defined by chromatic and non-chromatic colorants of an object, the method comprising the steps of: determining for said object a forward look up table having first colorant vectors in the first colorant vector space as entries and color vectors as data points, said look up table defining a forward transformation by tabulating colors that result from color measuring a number of samples in the first colorant vector space; calculating, utilizing a computer, a link look up table comprising said first colorant vectors in the first colorant vector space as entries and second colorant vectors in the first colorant vector space as data points; transforming, utilizing the computer, the colorant vector representing amounts of colorants of the object into a transformed colorant vector representing transformed amounts of colorants by using the link look up table in combination with a tetrahedral interpolation; wherein said second colorant vectors are obtained by separating the data points of said forward look up table by inverting said forward transformation in the first colorant vector space in combination with separation parameters, the separation parameters increasing the use of the non-chromatic colorants and reducing the use of the chromatic colorants in the transformed colorant vector.