Examine source code of Gitty - GitHub Dark Theme

{
  "manifest_version": 2,
  "name": "GitHub Dark Theme",
  "version": "1.0",
  "description": "A dark theme inspired by GitHub's dark mode",
  "theme": {
    "colors": {
      "toolbar": "#0d1117",
      "toolbar_text": "#ffffff",
      "frame": "#010409",
      "tab_background_text": "#ffffff",
      "toolbar_field": "#0d1117",
      "toolbar_field_text": "#ffffff",
      "toolbar_field_border": "#30363d",
      "popup": "#0d1117",
      "popup_text": "#ffffff",
      "popup_border": "#30363d",
      "tab_line": "#30363d",
      "tab_loading": "#30363d",
      "tab_selected": "#010409",
      "tab_text": "#ffffff",
      "tab_background_separator": "#30363d",
      "bookmark_text": "#ffffff",
      "button_background_hover": "#30363d",
      "button_background_active": "#30363d",
      "icons": "#ffffff",
      "icons_attention": "#ffffff",
      "frame_inactive": "#010409",
      "ntp_background": "#010409",
      "ntp_text": "#ffffff",
      "sidebar": "#0d1117",
      "sidebar_text": "#ffffff",
      "sidebar_border": "#30363d"
    }
  },
  "applications": {
    "gecko": {
      "id": "github-dark@aliahad.com"
    }
  }
}