Usage
XYZ2RGB(XYZmatrix, illuminant = "D65", observer = 2, RefWhite
= colorscience::XYZperfectreflectingdiffuser, RGBModel = "sRGB",
RefWhiteRGB = colorscience::whitepointsRGB, gamma = NA,
RefWhiteIllum = colorscience::XYZperfectreflectingdiffuser, CAT =
"Bradford", CATarray = colorscience::ChromaticAdaptation)