Examine source code of Kostolac Rain

{
  "theme": {
    "images": {
      "theme_frame": "commetsTop.jpg"
    },
    "colors": {
      "frame": "#b8b6b6",
      "tab_background_text": "#c9c7c7"
    }
  },
  "version": "2.0",
  "name": "Kostolac Rain",
  "manifest_version": 2,
  "description": "Kostolac Serbia Viminacium, rainy day theme"
}