Feature request: make accent color available programmatically

[archisman-panigrahi]

In both GNOME and KDE, the accent color can be read off from the key org.freedesktop.appearance accent-color (see https://flatpak.github.io/xdg-desktop-portal/docs/doc-org.freedesktop.portal.Settings.html and https://discuss.kde.org/t/is-there-a-way-to-programatically-determine-the-plasma-accent-color/19060).

It would be nice if cinnamon also exports its theme's accent color here, so that developers can directly make use of it to make the apps adhere to the system's color code.

[mtwebster]

There's a setting at org.x.apps.portal accent-rgb but it's currently only utilized if xdg-desktop-portal-xapp can't discover the accent color from the current Gtk3 theme - in this case the user could set it themselves (see linuxmint/cinnamon#12899).

I suppose we could also sync the color to this setting when using a supported theme. I didn't do this originally so a user's custom color wouldn't be overridden the moment they decided to do a little theme surfing.

[archisman-panigrahi]

It would be nice if cinnamon exports the accent color from the current gtk3 theme at org.freedesktop.appearance accent-color, to be consistent with GNOME and KDE, so that apps can use the some code to support accent colors in Cinnamon.

[mtwebster]

That is implemented in the settings portal in xdg-desktop-portal-xapp 1.1.1. I thought you were looking for a corresponding gsettings key.

This version will be in Mint 22.2