Examine source code of Imagine Cloud

{
  "theme": {
    "images": {
      "theme_frame": "Untitled-1-1-1psd.jpg"
    },
    "colors": {
      "frame": "#c9ebf2",
      "tab_background_text": "#c9ebf2"
    }
  },
  "version": "2.0",
  "name": "Imagine Cloud",
  "manifest_version": 2,
  "description": "Try to using. It is my second persona."
}