Both the grey vs black and the indentation can likely be resolved with patches. I know that the indentation has been addressed in a patch but I think it was to reduce it not increase it.
In either case there’s a thread you can request patches in
https://www.mobileread.com/forums/sh...=312598&page=7
Patching is pretty easy and with all the tweaks available it’s possible you’ll like your Kobo even more after trying them