Save colors in ProPhoto colorspace in color palettes

I would like to see the colors saved as an x, y coordinate in the ProPhote Colorspace when stored to Color Palettes. This could be as a new way (like ByType) of storing (Universal colorsystem for instance). This way it is easier to exchange fixtures in patch after a show is programmed. Now it is a huge problem if you change a RGBcW fixture for a RGB fixture or an RGBAL to an X8 fixture.