Examine source code of Wheatun

{
  "theme": {
    "images": {
      "theme_frame": "afirld.jpg"
    },
    "colors": {
      "frame": "#70c6db",
      "tab_background_text": "#163603"
    }
  },
  "version": "2.0",
  "name": "Wheatun",
  "manifest_version": 2,
  "description": "And the waving wheat it sure smells sweet..."
}