Examine source code of gruvbox light version

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "gruvbox light",
  "theme": {
    "images": {},
    "properties": {},
    "colors": {
      "toolbar": "rgb(251, 241, 199)",
      "toolbar_text": "rgb(121, 116, 14)",
      "frame": "rgb(249, 245, 215)",
      "tab_background_text": "rgb(60, 56, 54)",
      "toolbar_field": "rgb(235, 219, 178)",
      "toolbar_field_text": "rgb(175, 58, 3)",
      "tab_line": "rgb(181, 118, 20)",
      "popup": "rgb(249, 245, 215)",
      "popup_text": "rgb(40, 40, 40)",
      "tab_loading": "rgb(181, 118, 20)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{ec98d298-3723-4f98-8521-f385ab0b5901}"
    }
  }
}