Examine source code of cloudy nature

{
  "theme": {
    "images": {
      "theme_frame": "clouds1.jpg"
    },
    "colors": {
      "frame": "#f7eb00",
      "tab_background_text": "#002b4a"
    }
  },
  "version": "2.0",
  "name": "cloudy nature",
  "manifest_version": 2,
  "description": "Clouds cry us rain so that we could smile :)"
}