Different shades in the UI
Shell's UI seems to have a combination of old and early new Adwaita colors in 3.32.1.
The power off buttons, volume OSD, and the workspace and dock backgrounds have the green shades of the old Adwaita:
While the panel popups have the purple tint of the early iterations of the new theme:
Adwaita Dark uses neutral greys now, so these should have no saturation.