Examine source code of Deep Christmas

{
  "theme": {
    "images": {
      "theme_frame": "DarkStripesXmas_HeaderWeb.jpg"
    },
    "colors": {
      "frame": "#691010",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Deep Christmas",
  "manifest_version": 2,
  "description": "Darker Christmas colours in stripes and ornaments."
}