This is still a work in progress, but I'm really happy with how it is going so far so I thought I would share...
https://github.com/jimmckeeth/FMXColorDialog
There are a few custom components in the dialog, and there is a palette code library, plus there is a new CMYK color record. Just fun project to mess around with on vacation.
FMXColorDialogSample_PseA8aEaZC.mp4