Examine source code of Dark clones

{
  "theme": {
    "images": {
      "theme_frame": "clone-header-starwars.jpg"
    },
    "colors": {
      "frame": "#3b3a3a",
      "tab_background_text": "#fcfcfc"
    }
  },
  "version": "2.0",
  "name": "Dark clones",
  "manifest_version": 2,
  "description": "A group of Clones and the Star Wars logo"
}