1. A system of characterizing color of a Solid State Light (SSL) source, comprising: an energy source for stimulating a SSL source to emit light; a spectral acquisition apparatus for acquiring a Spectral Power Distribution (SPD) of light emitted by the SSL source; a computing device, wherein the computing device comprises a C-parameter module configured to: find a node in the SPD, wherein the node in the SPD comprises a continuous subset of the SPD having a predetermined minimum and maximum wavelength, wherein the node corresponds to a specific light generating mechanism; determine coefficients of one or more Gaussian functions for curve fitting the node, wherein the coefficients of the one or more Gaussian functions are expressed as a set of C-parameters; and output the set of C-Parameters that describes the SPD of the SSL source.