Examine source code of catruli

{
  "theme": {
    "images": {
      "theme_frame": "personakopf.jpg"
    },
    "colors": {
      "frame": "#0dc6de",
      "tab_background_text": "#0c0cc4"
    }
  },
  "version": "2.0",
  "name": "catruli",
  "manifest_version": 2,
  "description": "gossip girl"
}