Examine source code of Simple Christmas

{
  "theme": {
    "images": {
      "theme_frame": "Header.jpg"
    },
    "colors": {
      "frame": "#1e3320",
      "tab_background_text": "#212121"
    }
  },
  "version": "2.0",
  "name": "Simple Christmas",
  "manifest_version": 2,
  "description": "Maybe the simplest Christmas Persona on the planet... :-)"
}