White Point Correction in ColorConvert

One can do color space transformation with Mathematica’s ColorConvert function. This function supports basically all relevant color spaces. However there is one not well documented statement in this function about the chromatic (white point) adaption of transformations which reads

ColorConvert automatically performs chromatic (white point) adaptation. D50 white point is assumed for "XYZ", "LAB", "LUV", and "LCH" and D65 for "RGB", "CMYK", "HSB", and "Grayscale".

however there is no clear indication if one could modify this default behaviour by specifying another illuminant than D50 or D60 (e.g. A or C) for color transformations. The option WhitePoint which is available e.g. for Chromaticity plot is not working with ColorConvert.

A concrete example would be the transformation from Luv* color space coordinates {70, -60, 80} to XYZ color space which would be the command

ColorConvert[{70,-60,80}/100,"LUV","XYZ"]

which yields the result XYZColor[{0.227989,0.407494,0.008952}] for the D50 illuminant but if one would like to use illuminant e.g. "C" the correct result should be XYZColor[{0.225472,0.407494,0.114944}].

Any info on potentially hidden options are welcome…