Feature request: Color palette using system accent colors

[taprobane99]

Folio provides 45 color options for Notebook Color, but none of them specifically match the system color scheme.

It might be nice to also provide the system accent colors, maybe as a row above the "Custom" color row

On Ubuntu these are defined here and look great as Notebook Colors when running Folio on Ubuntu:

https://github.com/ubuntu/yaru/blob/master/common/accent-colors.scss.in

[toolstack]

There is a standard now for accent colours in Gnome, but it was just recently added.

Adding the accent colours might be doable, I don't know if the Gnome API lets you get all the colours or just the currently selected one.