With Index: colors;CMYK you get the page
Title: Loading Color, Gradient, and Hatching Lists
The feature to load and save arbitrary palette files has been removed. The content is outdated. But the help needs to explain, the role of the custom palette and the document-color-palette, and it should help admins to provide Custom Indentity colors in a shared palette.
The CMYK-palette has been removed. The item in the index has to be removed.
Index: colors;default colors and colors;loading lists link to it too.
Index: colors;LibreOffice colors, and colors;Tango colors, and colors;web link to it too.
The current color tab of the area dialog is described in
You get it via Index; colors;models