Accent colours support

[g7]

Hi,

would you be open to accept eventual contributions regarding accent colour support? I understand it might be a bit tricky, and perhaps it would be better to defer to the DE-specific desktop environments' portals.

But I see that there are some GNOME specific settings being handled by xdg-desktop-portal-gtk already. Would adding support for accent-color support in xdg-desktop-portal-gtk acceptable for you? Context is adding support for shells like phosh.

I assume it might be a bit tricky as the various desktops might not use the Adwaita colour palette, so we can't really hardcode the colours (and neither pull in libadwaita and retrieve those from there).

Thanks!

[yuki0iq]

Settings portal exposes RGB values as accent-color, and not strings nor some fixed keys. It would be nice to be able to specify accent color as a plain RGB triple which is independent of libadwaita palette.