[ZYZ64738]

If you are a dark mode addicted like me:

go for NORD theme

https://github.com/EliverLara/Nordic

and I love this icon set (white)

https://www.xfce-look.org/p/1277095

for more NORD integration have a look here:

https://www.nordtheme.com/ports

have fun

[anthk]

I'd choose Zukitre better. No dark theme or a light one blinding your eyes. Pretty neutral, gray.

As for the icon theme, Elementary XFCE works perfectly well with Zukitre. If not, ePapirus or Papirus itself. Simple and flat but contrasted, the opposite to a good chunk of flat themes today, where you can't guess where the buttons start and end.

Once you get used to that theme the Night Mode it's useless as I you can just spawn

     sct 5500  #or xsct

at daytime, or

     sct 3500 

at night time.

xsct/xsct will work with any window manager, too. And the Zukitre themes blend really well with minimal window managers as CWM, i3, DWM and the like, as it has neither curves nor gradients.