Examine source code of carmen

{
  "theme": {
    "images": {
      "theme_frame": "0.1.jpg"
    },
    "colors": {
      "frame": "#3b8522",
      "tab_background_text": "#299938"
    }
  },
  "version": "2.0",
  "name": "carmen",
  "manifest_version": 2,
  "description": "carmen"
}