Examine source code of gruvbox very red

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "gruvbox very red",
  "theme": {
    "images": {},
    "properties": {},
    "colors": {
      "toolbar": "rgb(251, 73, 52)",
      "toolbar_text": "rgb(40, 40, 40)",
      "frame": "rgb(204, 36, 29)",
      "tab_background_text": "rgb(235, 219, 178)",
      "toolbar_field": "rgb(235, 219, 178)",
      "toolbar_field_text": "rgb(40, 40, 40)",
      "tab_line": "rgb(40, 40, 40)",
      "popup": "rgb(189, 174, 147)",
      "popup_text": "rgb(40, 40, 40)",
      "tab_loading": "rgb(40, 40, 40)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{f6e4978b-1a15-4fb5-818a-a11422321a05}"
    }
  }
}