Examine source code of Soft Circles 2

{
  "theme": {
    "images": {
      "theme_frame": "pip.jpg"
    },
    "colors": {
      "frame": "#f2f7fc",
      "tab_background_text": "#1745a6"
    }
  },
  "version": "2.0",
  "name": "Soft Circles 2",
  "manifest_version": 2
}