Examine source code of thistle

{
  "theme": {
    "images": {
      "theme_frame": "thistlehdrwbar.jpg"
    },
    "colors": {
      "frame": "#d9d5d5",
      "tab_background_text": "#f5f0f3"
    }
  },
  "version": "2.0",
  "name": "thistle",
  "manifest_version": 2,
  "description": "thistle is in bloom right now in Florida"
}