Examine source code of C.E. O Holy Night

{
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "#0d0d0f",
      "tab_background_text": "#fcf7f7"
    }
  },
  "version": "2.0",
  "name": "C.E. O Holy Night",
  "manifest_version": 2,
  "description": "Designed by Creative Expressions, Oct. 2014."
}