Examine source code of circle locks

{
  "theme": {
    "images": {
      "theme_frame": "newnewheader.jpg"
    },
    "colors": {
      "frame": "#ffffff",
      "tab_background_text": "#000000"
    }
  },
  "version": "2.0",
  "name": "circle locks",
  "manifest_version": 2,
  "description": "A clean abstract design that is easy on the eyes and really makes your browser window unique"
}