Examine source code of Rain Drops

{
  "theme": {
    "images": {
      "theme_frame": "header.jpg"
    },
    "colors": {
      "frame": "#f2ee1f",
      "tab_background_text": "#f2ee1f"
    }
  },
  "version": "2.0",
  "name": "Rain Drops",
  "manifest_version": 2,
  "description": "This is a rain drop image"
}