gnome-unstable VS adw-gtk3

You can try with unstable gnome but since it is intended to use with Arch you may be cautious since it can lead to problems.

You can add to your mirrorlist the FCGU mirror and install unofficially the Gnome 43

I just installed Gnome 43 on arch using the FCGU repository and I'm very surprised on how snappy and fast the system feels. Normally the overview has some slowdowns and low fps, on fedora is even worse (I blame the energy profile thingy) but with 43 everything flies and runs very fast! I'll live on gnome for a few weeks at least, but I thing I'll keep this instalation for a while

Until then, you can try the unstable fcgu repo.

If you want it that bad you can just use the unstable repo

If you’re keen to try it you can use this: https://gitlab.com/fabiscafe/gnome-unstable

Bored? why wait?

That depends on the time of the year. I'm the maintainer of the GNOME-Unstable repo FGCU. So normally I spend no time at all to the repo… maybe a few minutes a week, except when GNOME does alpha, beta and early stable releases. Where this can end up with around 4, 5h some day.

what's the difference between this and the fcgu repo?

Use this theme

As far as I know it doesn't exist yet... but most likely Evince will be ported in the future. But while that doesn't happen, what you can do is use the adw-gtk3 theme (https://github.com/lassekongo83/adw-gtk3) for legacy applications to combine with applications that are already ported to libadwaita

Why not use the adw-gtk theme for gnome to make all the deco's match rather than use Adwaita-Dark?

Application Theme : adw-gtk-3 with Gradience

You can use the adw gtk3 theme. https://github.com/lassekongo83/adw-gtk3

GTK theme: adw-gtk3

That's because i use this KvLibadwaita and adw-gtk3 themes to have everything looking the same on Gnome :>

Just found a workaround for the issue until an update fixes the issue for Fedora 28 - Alt+F2, type "r" to restart Gnome Shell. More info: https://github.com/lassekongo83/adw-gtk3/issues/213

I believe that adw-gtk3 could still be beneficial in ensuring a uniform appearance across both GTK3 and GTK4 applications. The more solutions we can offer to users, the greater the likelihood of achieving the desired outcome.