Support diferent GTK themes about firefox-gnome-theme

[lionirdeadman]

No, it's not possible to simply adopt the theme.

Simply put :

• GTK Stylesheets are not used in Firefox

While we could try to match the color scheme, this theme is heavily inspired by Adwaita but it is not Adwaita. And that's simply because well, Firefox doesn't use GTK Stylesheets, they use UserChrome Stylesheets which are not the same at all because the items in that stylesheet are not GTK objects.

Someone could fork the project and hardcode it to replicate Mojave-Light but otherwise it's just not feasible.

[rafaelmardojai]

It could be partially done using -moz-appearance.

For example those properties will call styles adapted to GTK theme, but in a poorly way.

-moz-appearance: button;
-moz-appearance: -moz-window-button-close;
-moz-appearance: -moz-window-titlebar;

So will result with the theme looking broken and no polished.

[rafaelmardojai]

The only way something like that can be done, as @lionirdeadman mentioned, is separating position/reset styles from color/padding/margin ones. So specific CSS can be done for every GTK theme, sharing a base CSS.

But that will make maintenance harder. Port to Saas/Less should be considered, and so on.
So it's going to be a wontfix, but i can consider doing this work in a future.

[gitSaptarshi]

@Fatih20 If you use the Mojave GTK theme from then you can install the associated . I am using it and it looks like the following (btw I'm using Mojave-dark theme and set firefox theme to dark):