list-colors-sort

list-colors-sort is a variable defined in `facemenu.el'.
Its value is

nil

Documentation:
Color sort order for `list-colors-display'.
`nil' means default implementation-dependent order (defined in `x-colors').
`name' sorts by color name.
`rgb' sorts by red, green, blue components.
`(rgb-dist . COLOR)' sorts by the RGB distance to the specified color.
`hsv' sorts by hue, saturation, value.
`(hsv-dist . COLOR)' sorts by the HSV distance to the specified color
and excludes grayscale colors.
`luminance' sorts by relative luminance in the CIE XYZ color space.

You can customize this variable.

This variable was introduced, or its default value was changed, in version 24.1 of Emacs.