Examine source code of Merry Christmas

{
  "name": "Merry Christmas",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "tianyi-ma-WiONHd_zYI4-unsplash.jpg"
    },
    "colors": {
      "frame": "rgba(204, 33, 33, 1)",
      "tab_background_text": "rgba(250, 250, 250, 1)",
      "toolbar": "rgba(41, 207, 12, 1)",
      "bookmark_text": "rgba(28, 77, 214, 1)",
      "toolbar_field": "rgba(232, 169, 169, 1)",
      "toolbar_field_text": "rgba(66, 53, 53, 1)"
    }
  }
}