Miniflux

Service
- https://flux.rootdo.com
Source
- https://github.com/miniflux

Miniflux is a minimalist and opinionated feed reader
Custom Theme
- https://rootdo.com/mf.css
- MINIFLUX CUSTOM CSS
- You can add this custom CSS code in your miniflux settings. It is just an example. You can find many others on the Web.