Colour picker: HSV→RGB.
This theme is constantly discussed in the GeoGebra forum:
https://help.geogebra.org/topic/colour-picker-popup
https://help.geogebra.org/topic/copy-colour-of-object-with-command
https://www.geogebra.org/material/show/id/byRBewXH or https://www.geogebra.org/m/bvtbkhcm
I used this view earlier for color correction in https://www.geogebra.org/m/f2e5vxdb 92 Stellations with example of model of an Truncated icosidodecahedron .