Some GTK2/GTK3 apps are not themed

[Bluey26]

Hello.

First of all,thanks a lot for this app, i was looking for a way to set the gtk4 app themes in a easy way and i was suggested to use this one (Thanks Stef). It did it in a simple way, but i have found an issue with some GTK2/GTK3 apps:

Some xwayland apps, for example, stardict and thunar does not seem to follow the themes. I have set "prefer-dark" themes and i have chosen "Arc-Solid" or "Deepin" GTK themes, but those apps seem to keep in a white colorscheme (Those 2 themes have a dark variant).

For some reason, the lxqt-config-appearance approach seems to theme those apps properly (activating the "Set GTK themes" option) but it does not have the GTK4 apps theming support that this app haves.

I also tried to see what happened in X11 LXQt desktop, and those apps (stardict and thunar) does not seem to be themed either, so there is something about theming going on(not wayland related).

Thanks.

PS: the icon themes are not applied either, it seems to use a default icon theme.