I’m using Manjaro Gnome for a while now. But I don’t like the green accents from the default shell theme. Is there a repo from which I can source the Adwaita dark shell theme?
The green accents are part of the Adwaita-maia-dark theme. The default Adwaita-dark theme is part of GNOME itself. You can change the theme under Tweaks > Appearance.
To be noted that if User Themes extension is activated, you will get the maia shell theme (with green accents), even if Adwaita dark is selected as shell theme.
You need to deactivate the extension to get the default gnome adwaita dark shell theme with blue accents.