Feature Request - CMYK Spectrum in Color Panel not just Color Picker

[Eamonn5FE3]

Witch the color picker open, CMD-SHIFT-Y, grays out the RGB spectrum and only shows the colors available in the CMYK spectrum. This is a brilliant function when working for print. 

However, it would save a lot of time to also make it visible within the main Color Panel itself and not just the pop up picker. Thank you!