Thanks for this awesome mod, it`s working fine on my flo.
I didn`t tried to install Dark Jelly as additional rom via Aroma Installer,
but tried to install ElementaX kernel to an additional rom, which also uses Aroma Installer,
and this also resulted in a black screen.
(But its working fine to add Dark Jelly, (and certainly other roms which also using Aroma Installer) via the install from backup option).
I guess it`s a problem with the Aroma Installer.
I don`t know, if this is the right place,
I would like to use the mod also on my Nexus 4, (MultiRom is ported to the Nexus 4),
but unfortunately it uses TWRP 18.104.22.168 as base,
I thought about compiling TWRP(Multirom) from source to have the latest TWRP version as base,
but will the TWRP(Multirom) sources linked in post #1 are also working with the Nexus 4, or are they device specific sources?