Examine source code of Frozen forest

{
  "name": "Frozen forest",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "frozen2forest.jpg"
    },
    "colors": {
      "tab_background_text": "rgba(173, 64, 21, 1)",
      "bookmark_text": "rgba(173, 64, 21, 1)",
      "toolbar_field_text": "rgba(173, 64, 21, 1)"
    }
  }
}