Examine source code of Dark High Contrast

{
  "manifest_version": 2,
  "version": "1.1.0",
  "name": "Dark High Contrast",
  "developer": {
    "name": "3kezoh",
    "url": "https://github.com/3kezoh"
  },
  "theme": {
    "colors": {
      "bookmark_text": "white",
      "toolbar": "black",
      "toolbar_text": "white",
      "frame": "black",
      "tab_background_text": "white",
      "toolbar_field": "black",
      "toolbar_field_text": "white",
      "tab_line": "white",
      "popup": "black",
      "popup_text": "white",
      "tab_loading": "white",
      "icons_attention": "white",
      "icons": "white"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{105b94cc-b363-4931-b4e5-db0f22c303f1}"
    }
  }
}