Examine source code of Christmas Cheer

{
  "name": "Christmas  Cheer",
  "manifest_version": 2,
  "version": "4.0",
  "theme": {
    "images": {
      "theme_frame": "ChristmasCheerHCustom.jpg"
    },
    "colors": {
      "frame": "rgba(153, 28, 12, 1)",
      "tab_background_text": "rgba(255, 255, 255, 1)",
      "toolbar": "rgba(153, 31, 12, 0)",
      "bookmark_text": "rgba(255, 255, 255, 1)",
      "toolbar_field": "rgba(153, 33, 12, 0.07)",
      "toolbar_field_text": "rgba(255, 255, 255, 1)",
      "tab_line": "rgba(255, 252, 252, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{4d8433d0-e407-42e5-af71-c9d67bb74920}"
    }
  }
}