In order to install the
night mode hack and the
screensaver hack just follow the usual procedure (copy the KoboRoot.tgz to .kobo). Both packages contain install routines that are superfluous when used with KSM, but that must not bother you.
The referred version of the screen saver seems not to work under FW 3.13.1. (Edit: for FW 3.15.0 and newer use the screen saver version you can find
here.)
Since update 2 (of KSM 07), there is a configuration manu available.
In order to enable the screensaver hack select in (KSM home) "configure", in the section [nickel]:
nickelpreload="/opt/cfw/preload/hook.so"
to enable night mode:
nickelpreload="/root/screenInv.so"
to enable both:
nickelpreload="/opt/cfw/preload/hook.so /root/screenInv.so"