Examine source code of Autumn Fields

{
  "name": "Autumn Fields",
  "manifest_version": 2,
  "version": "2.0",
  "theme": {
    "images": {
      "theme_frame": "golden autumn.jpg"
    },
    "colors": {
      "frame": "rgb(35, 37, 1)",
      "tab_background_text": "rgb(255, 255, 255)",
      "toolbar": "rgba(225, 234, 239, 0.41)",
      "bookmark_text": "rgba(189, 189, 189, 1)",
      "toolbar_field": "rgb(255, 255, 255)",
      "toolbar_field_text": "rgba(9, 9, 10, 1)",
      "tab_line": "rgb(242, 227, 6)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{8da994c9-15cf-42d8-8012-86a106ccc127}"
    }
  }
}