Examine source code of Dandelion Blowball

{
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "#101010",
      "tab_background_text": "#f3f3f3"
    }
  },
  "version": "2.0",
  "name": "Dandelion Blowball",
  "manifest_version": 2,
  "description": "A Dandelion blowball, with a few seeds taking to the air."
}