Panel bg_color defined based on _colors.scss
Feature summary
Panel background color is hard-coded in https://gitlab.gnome.org/GNOME/gnome-shell/-/blob/main/data/theme/gnome-shell-sass/widgets/_panel.scss#L4
Wouldn't it be better to use global colors defined in https://gitlab.gnome.org/GNOME/gnome-shell/-/blob/main/data/theme/gnome-shell-sass/_colors.scss ?
And potentially use other color than '#000'?
I know that this is a personal preference, but I think it's actually the only thing that is using a full back background and it seems a little bit inconsistent to me. Attached screenshot shows two panels one with #1c1c1c
used as Calculator background, second uses the default #000
. I'd say that something like #1c1c1c
works better with libadwaita.