Examine source code of Hello Kitty Halloween

{
  "theme": {
    "images": {
      "theme_frame": "hkh.jpg"
    },
    "colors": {
      "frame": "#ed6803",
      "tab_background_text": "#000000"
    }
  },
  "version": "2.0",
  "name": "Hello Kitty Halloween",
  "manifest_version": 2,
  "description": "hello kitty SANRIO halloween holiday japan japanese kawaii cute yuko shimizu bats spider web pumpkin moon witches"
}