Examine source code of swedish new year

{
  "theme": {
    "images": {
      "theme_frame": "swedishnewyear.jpg"
    },
    "colors": {
      "frame": "#3f41c4",
      "tab_background_text": "#f9fafc"
    }
  },
  "version": "2.0",
  "name": "swedish new year",
  "manifest_version": 2,
  "description": "Snow, winter, new year, Sweden, swedish wintertime, snowy scene, holiday, christmas time, winter wonderland"
}