Examine source code of Moss abstract

{
  "theme": {
    "images": {
      "theme_frame": "green_blue_top.jpg"
    },
    "colors": {
      "frame": "#4c5445",
      "tab_background_text": "#ebf0da"
    }
  },
  "version": "2.0",
  "name": "Moss abstract",
  "manifest_version": 2,
  "description": "Green, blue, natural, squares, abstract, quilt"
}