Preview my startpage here.
Original repository: https://github.com/borsched/Prismatic-Night
I took out the search bar because it already presents me with a search bar once I update mozilla.cfg. You can follow the instructions on the original repository to install this startpage.
The final tree should look like this:
.mozilla/firefox/someprofile.default-release/
├── chrome
└── startpage
./index.html and ./style.css are just for GitHub pages.