I’ve been on manjaro gnome for a long time, but since the installation I kept wondering why it was installed with the blue interface and not with the default one. I thought that after the updates it would return to the green color, but it seems not. Is it possible to switch to the green theme? I tried to look for the official theme through gradients but I didn’t find one. Thanks for support.
I only asked because I thought you had just installed it.
Install gnome-shell-extension-custom-accent-colors and choose the Maia accent color. Note that you’ll need to restart GNOME Shell / logout after installing the extension and after changing the accent color.
If you want the Maia accent color on the login / lock screen (GDM), install gnome-shell-maia.
The screenshot appears to be Layouts Switcher which is a Gtk 3 application. Set the theme to Adw-dark or Adw-gtk3 under Tweaks > Appearance > Legacy Applications.