Examine source code of Todor (Gray)

{
  "name": "Todor (Gray)",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "PNG_image.png"
    },
    "colors": {
      "frame": "rgba(43, 43, 43, 1)",
      "tab_background_text": "rgba(201, 201, 201, 1)",
      "toolbar": "rgba(66, 66, 66, 1)",
      "bookmark_text": "rgba(199, 199, 199, 1)",
      "toolbar_field": "rgba(41, 41, 41, 1)",
      "toolbar_field_text": "rgba(204, 204, 204, 1)",
      "tab_line": "rgba(194, 194, 194, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{80b8ad74-8915-45c3-816c-9fbadc7a2371}"
    }
  }
}