Examine source code of Magical Christmas Tree

{
  "theme": {
    "images": {
      "theme_frame": "MagicalChristmasTreeHeader.JPG"
    },
    "colors": {
      "frame": "#19f4fc",
      "tab_background_text": "#19f4fc"
    }
  },
  "version": "2.0",
  "name": "Magical Christmas Tree",
  "manifest_version": 2,
  "description": "Christmas is a magical time."
}