Save 4 "Custom" Ucolor choices that are permanent

After picking a "custom" Ucolor for a face, if another color is then picked from default color options, the Custom color will no longer be as chosen.

For example, i pick a custom color, apply to watch and it stays as color option somewhat permanently. If I then pick another "standard" color and close watch in WM, when I re-open the watch, the custom color has been overwritten and I lose the custom choice permanently.


Furthermore, I'd like to have 4 color choices that I use and can quickly change to my own custom colors. Ideally, there would be 4 special slots in the color picker, that would be my permanent custom palette