Hacking My Kobo with KOReader

A long long time ago I start using a EBook Reader, the first Kindle PaperWhite (2012) and I never stop using EReader. The last one I own is a Kobo Clara Colour, this one. I love it and the fact I can read in color comics, manga, web comics and graphic novel everywhere is a plus. But more and more I use Ebook Readers more and more I want to customize it. Like I have in the pic.