The admins will see the color picker based on what is defined in this setting.
We will find this setting in the User Interface section.
Validation = HEX color = # followed by six characters (0-9 and A-F)
The mandatory number of colors is 4, and the maximum is 6 (2 optional colors).
If the admin has configured 5th Color and/or 6th Color, they will appear in the color picker.
The default values will be Appspace Intranet product colors.