Examine source code of Underwater

{
  "theme": {
    "images": {
      "theme_frame": "Header.jpg"
    },
    "colors": {
      "frame": "#566b2a",
      "tab_background_text": "#dbe3b6"
    }
  },
  "version": "2.0",
  "name": "Underwater",
  "manifest_version": 2,
  "description": "This is a Image I took under a waterfall with the watercolor effect added in photoshop."
}