Examine source code of Wild Grapevine

{
  "theme": {
    "images": {
      "theme_frame": "top.jpg"
    },
    "colors": {
      "frame": "#637d54",
      "tab_background_text": "#edd479"
    }
  },
  "version": "2.0",
  "name": "Wild Grapevine",
  "manifest_version": 2,
  "description": "Impressionistic photo of wild grapevine growing along a desert creek in Arizona."
}