I just installed and setup Jwm, everything works fine except that the background image I set for the desktop doesn't look very good, sort of... soft.
It is the same image I use in Xfce and Fluxbox and, as in Fluxbox, I used feh to set the image in Jwm, but it looks a lot worse.
This is the line in .jwmrc I used to set the background.
<StartupCommand>feh –bg-scale /usr/share/wallpapers/desktop1.jpg</StartupCommand>
</Desktops>
Everything else works and looks fine.