Customizations for github.com via StyleURL.

github-201faf1692b728b117b5390ea3dce432.css

.Header {
  color: rgba(191, 30, 30, 0.75);
}

Stylefile.yml

---
version: 1.0
domains:
- github.com
url_patterns:
- github.com/*
timestamp: '2018-08-02T08:18:47Z'
id: Wm7V
redirect_url: https://github.com/
shared_via: StyleURL - (https://styleurl.app) import and export CSS changes from Chrome
  Inspector to a Gist you can share (like this one!).

stylus-1.css

.Header {
  background-color: rgb(255, 255, 255) !important;
}