Dark mode is not working

[Nihisil]

Bug/Feature description

When I switch to Dark mode in settings nothing happens (I tried to restart the app).

System Information

• Operating System: Linux Mint 20 Cinnamon
• Installation source: Flatpak
• Version of cozy: 0.6.19

Not sure if that can help, but this is my OS theme settings:

[geigi]

Thanks for reporting :)
It seems like an Linux Mint specific problem or a problem with the theme you are using. Does Cozy look like a regular app for you (regarding the theme) or does it look different?

[Nihisil]

The app looks like the regular app.

[geigi]

Hey, I just figured out that the Mint-Y Theme doesn't support a dark mode. Linux Mint has dark themes but they are separate themes and not a single theme with a light and dark variant. Therefore Cozy is unable to change it's theme to a dark variant.

So if you want Cozy to use a dark mode in Linux Mint you'll have to change the theme of the whole system to a dark theme. After that, you'll have to install the theme you're using in flatpak so that Cozy (and other flatpak apps) can pick it up:

flatpak install flathub org.gtk.Gtk3theme.Mint-Y-....

List of themes:

org.gtk.Gtk3theme.Mint-Y
org.gtk.Gtk3theme.Mint-Y-Aqua
org.gtk.Gtk3theme.Mint-Y-Blue
org.gtk.Gtk3theme.Mint-Y-Brown
org.gtk.Gtk3theme.Mint-Y-Dark
org.gtk.Gtk3theme.Mint-Y-Dark-Aqua
org.gtk.Gtk3theme.Mint-Y-Dark-Blue
org.gtk.Gtk3theme.Mint-Y-Dark-Brown
org.gtk.Gtk3theme.Mint-Y-Darker
org.gtk.Gtk3theme.Mint-Y-Darker-Aqua
org.gtk.Gtk3theme.Mint-Y-Darker-Blue
org.gtk.Gtk3theme.Mint-Y-Darker-Brown
org.gtk.Gtk3theme.Mint-Y-Darker-Grey
org.gtk.Gtk3theme.Mint-Y-Darker-Orange
org.gtk.Gtk3theme.Mint-Y-Darker-Pink
org.gtk.Gtk3theme.Mint-Y-Darker-Purple
org.gtk.Gtk3theme.Mint-Y-Darker-Red
org.gtk.Gtk3theme.Mint-Y-Darker-Sand
org.gtk.Gtk3theme.Mint-Y-Darker-Teal
org.gtk.Gtk3theme.Mint-Y-Dark-Grey
org.gtk.Gtk3theme.Mint-Y-Dark-Orange
org.gtk.Gtk3theme.Mint-Y-Dark-Pink