Adding theming for gtk apps

[Maciejonos]

What do you think about adding themes for gtk apps (just a .css file in /gtk-3.0 and /gtk-4.0, importing from current theme)? Nautilus would look more in line with the whole system.

Example:

[dash-09]

Not even nautilus, in all apps because most of them looks shite .
And idk why gtk. 4.0 is hell it is very complicated