Examine source code of Azure Sky

{
  "theme": {
    "images": {
      "theme_frame": "Azure-Sky-Header.jpg"
    },
    "colors": {
      "frame": "#023080",
      "tab_background_text": "#fcfcfc"
    }
  },
  "version": "2.0",
  "name": "Azure Sky",
  "manifest_version": 2,
  "description": "天蓝云 雲水色 天藍雲 غيوم السماء الزرقاء nubes cielo azul nuages ​​ciel bleu  बादल आसमान नीला cielo nuvole blu céu azul nuvens ท้องฟ้าเมฆสีฟ้า đám mây trên bầu trời xanh  구름 스카이 블루  Wolken Himmel blau σύννεφα στο μπλε του ουρανού bright deep blue horizon rain clouds cloudy sky fluffy stormy storm  Original Photo CCATTR by: ecstaticist of flickr"
}