Examine source code of Santa Has Landed

{
  "name": "Santa Has Landed",
  "manifest_version": 2,
  "version": "5.0",
  "theme": {
    "images": {
      "theme_frame": "SantaHasLandedHCustom.jpg"
    },
    "colors": {
      "frame": "rgba(5, 0, 153, 1)",
      "tab_background_text": "rgba(255, 255, 255, 1)",
      "toolbar": "rgba(10, 0, 153, 0)",
      "bookmark_text": "rgba(255, 255, 255, 1)",
      "toolbar_field": "rgba(10, 0, 153, 0.1)",
      "toolbar_field_text": "rgba(255, 255, 255, 1)",
      "tab_line": "rgba(232, 0, 0, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{05a8f4d3-9ca6-48fe-9aeb-dc5745356fb2}"
    }
  }
}