Examine source code of Free Hugs

{
  "theme": {
    "images": {
      "theme_frame": "pers_h.png"
    },
    "colors": {
      "frame": "#000000",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Free Hugs",
  "manifest_version": 2,
  "description": "Free Hugs! A friend of mine had the great idea of going through munich with FREE HUGS-signs. so did we. this is the ultimate evidence :)"
}