Examine source code of Venice Sun

{
  "theme": {
    "images": {
      "theme_frame": "Header.jpg"
    },
    "colors": {
      "frame": "#ed3d3d",
      "tab_background_text": "#d6b6b6"
    }
  },
  "version": "2.0",
  "name": "Venice Sun",
  "manifest_version": 2,
  "description": "Sunny afternoon on the Grand Canal"
}